• Project shortcuts can be reordered
• Store attachments in the S3 object storage

• Project permissions get extended configuration

• Select issue watchers only from users who have access to your project
• The Rich Text gadget substitutes the deprecated Text gadget
• Use AWS Secrets Manager to manage Jira Software configuration

• Search for projects and issue types in custom field contexts
• Add linked issues to the existing ones with one click

• Custom field improvements
• Amazon S3 storage for avatars and attachments
• Disable smart query in the quick search
• Microsoft Graph API integration for incoming mail

• Improved commenting experience 
• Auto-managed sprints
• Updates to the mail queue health check

• Configuring contexts for custom fields: new design, enhanced functionality

• Pin comments in Jira issues

• Fixed validation for required custom fields of the Select list (cascading) type

• Take index snapshots with one click at any time
• New mail queue health check ensures that emails are sent without any issues

• Crowd membership changes batched during full and incremental directory syncs
• Cache App API deprecated
• jira.diagnostics.ipdlog.poll.seconds system property removed from In-product diagnostics

• Jira migrates to Log4j2
• Audit log improvements
• In-product diagnostics updates: new user interface, REST API, and performance metrics
• Support for Java 17 added
• The H2 database upgraded from 1.4.200 to 2.1.214
• Jira Temporary Directory Cleaner introduced

• Multi-threaded index catch-up for autoscaling
• Improved accuracy of app attribution for database usage
• New database connectivity metrics for in-product diagnostics
• Activity tabs failures fixed

• Jira agile views: faster loading, better performance
• Introducing OAuth 2.0 for outgoing mail
• Jira pickers get a performance boost
• Configuring diagnostic recording with JFR

• Performance improvements for Agile boards

• Excluding events from the audit log

• Diagnosing and troubleshooting Jira with Java Flight Recorder

• Prioritized search results in the issue navigator

• Application monitoring

• Improved indexing management at Jira start-up

• Activity tabs improvements (Data Center)
• Excessive activity limits with Safeguards (Data Center)

• Security fixes for API endpoints

• Redesign for the View on board feature for better performance
• Issue status menu improvements
• Easy Jira troubleshooting with Java Flight Recorder
• Automation bundled with Jira (Data Center)

• Jira can now be configured as an OAuth 2.0 provider
• Login performance improvements for basic authentication
• Excluding projects from the data pipeline

• Additional language support for Advanced Roadmaps (Data Center)
• Improved search performance in the project picker
• Improved gadget configuration experience

• New wizard for creating plans in Advanced Roadmaps (Data Center)
• Dependency report in Advanced Roadmaps (Data Center)
• Filtering epics and versions in backlogs
• Data pipeline improvements (Data Center)
• Pagination and UI improvements on Screens 

• Comment reactions (Data Center)
• Analyzing how your issues change over time with data pipeline (Data Center)

• Keep consistent naming of sprints and epics between Jira and Agile at Scale frameworks with Flexible Terminology
• Refreshed commenting experience with improved appearance, keyboard navigation and support for assistive technologies
• Custom fields are now included in data pipeline exports (Data Center)
• Around 100 security vulnerabilities fixed in the Jira platform

• Get more insights into the usage of custom fields (Data Center)
• Bulk delete custom fields (Data Center)
• Default values for the Description field (Data Center)
• Let users log in with multiple identity providers (Data Center)
• Check the status of your data pipeline exports (Data Center)
• Keep Jira safe by disabling basic authentication
• Improvements to DVCS accounts

• Advanced Roadmaps is now part of Jira Software (Data Center)
• Displaying image attachments in email notifications

• Email templates made better (Data Center)
• Quickly view issues belonging to an epic
• DVCS Connector improvements
• Personal access tokens
• Embedded Crowd and password encryption
• Accessibility improvements when creating issues
• Improved data insights (Data Center)
• Jira Cloud Migration Assistant bundled with Jira
• Choosing Bamboo plan branches in Jira

• More control over your Advanced Audit log
• Support for MySQL 8.0
• Improved user picker
• Less app impact on indexing
• Users created automatically with Just-in-time user provisioning

• Managing private filters and dashboards
• Issue detail view can be hidden per board
• Improved email notifications for mentions
• Embedded Crowd upgrade
• Max timeout for the Favorite Filters gadget
• Restricting sprint selection when creating or editing issues
• Configuring how fast stale nodes are moved offline (Data Center)

• OAuth 2.0 support for incoming mail
• User anonymization (GDPR) improvements
• More insight into your custom fields (Data Center)
• Stale nodes automatically removed (Data Center)
• Optimized custom fields (Data Center)

• Node and application status for Jira Data Center cluster monitoring
• Refreshed Velocity Chart
• Accessibility: Text spacing

• Revamped audit log
• Setting dates for future sprints
• Accessibility settings
• Running Jira Data Center on a single node (available for all versions)

• Anonymizing users for GDPR compliance
• PostgreSQL 11 support
• OpenID Connect comes to Jira Data Center

• Jira copies over changes files on upgrade
• New JVM code cache check
• Replying to JIRA notifications in Outlook made way better
• Users and roles made better
• PostgreSQL 10 comes to Jira
• Several older platforms get deprecated
• Prefix and suffix search
• Accessible dropdown menus
• Configurable scheme parameters in Jira REST API for projects creation
• Burnup charts in Jira Software

• Self-protect your Jira Data Center and sleep easy with rate limiting
• New information in the audit log for Jira Data Center
• Cluster monitoring in Jira Data Center

• Filters in 'Multi user picker' custom field
• Batching emails as a default setting
• External links open in a new tab
• Filters to browse archived issues
• Jira becomes more accessible
• Lots of versions OK for boards
• Time tracking in bulk edit
• Templates for deploying Jira in a Docker container (8.0 and later)

• Jira Server mobile app
• Content Delivery Network (CDN) for Jira Data Center
• AdoptOpenJDK bundled with Jira
• List of custom changes after upgrade
• New filters to search for custom fields
• Browsing projects is faster
• Improvements to batching emails
• Cluster lock mechanism improved in Data Center
• Re-indexing made better

• Archiving issues, first milestone (Jira Data Center)
• Archiving components
• Development info on issue cards
• Improvements to boards: resizable Detail View and horizontal scrollbar for boards with many columns
• Performance improvements for boards and backlogs, and other pages that use the side navigation
• Improvements to deployment templates for Jira Data Center on Microsoft Azure
• New JMX metrics for more insights into Jira performance
• Sorting projects by columns
• Ability to add additional custom fields to batched email notifications
• Information about recent activity on user profiles
• New avatars

• Jira Software mobile app (beta)
• Batching email notificaitons to reduce the number of emails you're getting from Jira
• New look and feel of Scrum/Kanban boards and backlogs
• Performance improvements for backlogs
• New priority icons
• New JQL options: finding authors of updates, and finding link types
• New configuration for MySQL 5.7 that allows 4-byte characters
• Massive improvements to indexing
• REST API for issue type schemes

• Custom fields optimizer (Data Center)
• Sharing edit rights for filters and dashboards
• New events in the audit log (filters and dashboards)
• New look and feel of the custom fields page
• Disabling Days in column time indicator to improve performance
• New compression method (Google's Snappy) when copying the index between the nodes (Data Center)

• Support for IPv6
• New columns on the Projects page (Issues, Last issue update)
• Development information available in Basic Search
• Apache Tomcat 8.5.29

• New look and feel for Jira, including the first wave of changes to the most frequently used pages.
• Archiving inactive or completed projects (Data Center).
• New events in the audit log.
• Case-insensitive labels.
• Quick start guide for Jira Data Center.
• Sending Jira notifications to Stride rooms and conversations.

• Improved Kanban boards showing only recently modified issues in the Done column.
• Searching through versions with a wildcard.
• Choosing delimiters when exporting your issues to CSV.
• Disabling empty JQL queries to avoid performance issues with empty filters.
• New events in the audit log.
• Asynchronous cache replication in Jira Data Center.
• IPv6 support for MySQL databases.

• Quick search that shows instant results, and displays your recent work if you're not searching.
• Dutch language pack.

• REST API to manage priority schemes outside of the user interface
• Italian and Finnish language packs

• Improved Kanban backlog: versions and epics panels to let you better manage your releases.
• Sprint goals: add goals to your sprints to let your team know what you want to achieve.
• Renaming and deleting inactive or closed sprints.
• Jira Software Data Center on Microsoft Azure.
• Events for creating and deleting issue links.
• Syntax highlighting for additional 25 languages.

• New Czech, Estonian, Danish, Icelandic, Norwegian, Romanian, Slovak, and Polish language packs.

• Link multiple Confluence spaces to a single portal
• Get data for any time slice
• New editor in Assets
• Improved search experience on the Customers page
• Read-only access to Assets information for Confluence users
• Performance improvements to the AQL connectedTickets() method
• Accessibility fixes for low-vision and keyboard-only users
• Project shortcuts can now be reordered
• Project permissions get extended configuration
• Select issue watchers only from users who have access to your project
• Store attachments efficiently in S3
• Improvements to the support zip creation
• Rich text gadget for dashboards

• Identify request types by groups
• Customer Request Type field available in dashboard gadgets
• Clone queues to save time spent on configuration
• New documentation on sharing requests with groups

• Share requests with Jira groups
• Run imports on dedicated nodes and track progress
• Comments on approvals supported in Jira Service Management for Mobile 
• Changes to the login-free portal signup flow
• Accessibility fixes for low-vision and keyboard-only users

• Attachments in approval comments
• Microsoft Graph API integration
• Performance improvements in Assets
• Accessibility improvements

• Comments for approvals
• Accessibility improvements
• Updated settings for Assets Groovy scripts
• Performance improvements in Assets

• Further auditing improvements
• Support for Assets referenced object fields in approvals
• Email channels support mailbox folders
• Linking issues no longer limited to agents

• Improved email filtering

• Auditing improvements for the customer portal and Assets

• Jira migrates to Log4j2
• Audit log improvements
• In-product diagnostics updates: new user interface, REST API, and performance metrics
• Support for Java 17 added
• H2 database upgraded from 1.4.200 to 2.1.214
• Jira Temporary Directory Cleaner introduced

• Help Center column sorting
• Login-free customer portal
• Insight is now called Assets
• Improved accessibility and user interface in Assets

• Help Center announcement improvements
• Background processing performance improvements
• Insight accessibility and UI enhancements
• OAuth 2.0 Outgoing mail (SMTP)
• Diagnostic recording configuration with JFR

• Email channels audit log
• Insight accessibility and uplift
• Better PSMQ information logging
• Excluding events from the audit log
• Improved indexing management at Jira start-up
• Diagnosing and troubleshooting Jira with Java Flight Recorder
• Prioritized search results in the issue navigator
• Application monitoring

• Multiple email channels (Data Center)
• New SLA configuration interface (Data Center)
• Auto-populated request fields (Data Center)
• Jira can now be configured as an OAuth 2.0 provider
• Login performance improvements for basic authentication
• Excluding projects from the data pipeline

• Request list configuration (Data Center)
• Comment reactions (Data Center)
• Queues in the mobile app
• Improved search performance in the project picker
• Improved gadget configuration experience

• Approvers from Insight asset management (Data Center)
• Better language support for asset management
• Manually adjusting projects to better change management (Data Center)
• Data pipeline improvements (Data Center)
• Pagination and UI improvements on Screens 

• Another bunch of vulnerabilities fixed in the Jira platform and Jira Service Management
• Showing SLAs on customer portals (Data Center)
• Turning off search bar on customer portals (Data Center)
• Mentions on customer portals (Data Center)
• Summary of mobile app improvements
• Analyzing how issues change over time with data pipeline

• Around 100 security vulnerabilities fixed in the Jira platform
• Over 20 security vulnerabilities fixed in Jira Service Management
• Custom fields now included in data pipeline export (Data Center)

• Get more insights into the usage of custom fields (Data Center)
• Bulk delete custom fields (Data Center)
• Default values for the Description field (Data Center)
• Let users log in with multiple identity providers (Data Center)
• Check the status of your data pipeline exports (Data Center)
• Keep Jira safe by disabling basic authentication

• Mindville's Insight - Asset Management is now part of Jira Service Management (Data Center)
• Customer portal improvements (cards view in Help Center, rich text editor, voting for requests)
• Official support for service projects in the Jira mobile app
• Improved data insights, now also for Jira Service Management
• Displaying image attachments in email notifications

• Jira Service Desk is now Jira Service Management
• New events in the audit log (Data Center)
• Email templates made better (Data Center)
• Personal access tokens
• Embedded Crowd and password encryption
• Accessibility improvements when creating issues
• Improved data insights (Data Center)

• Multilingual customer portal and help center
• Advanced auditing (Data Center)
• Managing private filters and dashboards
• Embedded Crowd upgrade
• Max timeout for the Favorite Filters gadget
• Configuring how fast stale nodes are moved offline (Data Center)

• OAuth 2.0 support for incoming mail
• User anonymization (GDPR) improvements
• More insight into your custom fields (Data Center)
• Stale nodes automatically removed (Data Center)

• Managing multiple issues at once with bulk actions
• No more duplicate attachments in requests
• Accessibility settings
• Revamped audit log
• Running Jira Data Center on a single node (available for all versions)

• Requests are private by default
• Email verification
• Changes in how agents are treated by Jira
• Anonymizing users for GDPR compliance
• OpenID Connect (Data Center)

• New portal is now default
• Improvements to agent queues
• REST API for managing agent queues
• Previous and next search results
• Users and roles made better
• Custom changes transferred on upgrade
• Suffix search
• New health check: JVM code cache
• Rate limiting (Data Center)
• New events in the audit log (Data Center)

• Search just got smarter
• Limited threads to boost performance
• Content Delivery Network (CDN) for Jira Data Center
• AdoptOpenJDK bundled with Jira
• List of custom changes after upgrade
• New filters to search for custom fields
• Browsing projects is faster
• Safer cluster lock mechanism for Data Center
• Reindexing made easier

• New help center and customer portal experience
• Smarter automation webhooks
• Information about recent activity on user profiles
• New avatars

• Performance improvements for common tasks
• New priority icons
• New JQL options: finding authors of updates, and finding link types
• New configuration for MySQL 5.7 that allows 4-byte characters
• Massive improvements to indexing

• Smart SLAs based on due dates
• Custom fields optimizer (Data Center)
• Sharing edit rights for filters and dashboards
• New events in the audit log (filters and dashboards)
• New look and feel of the custom fields page

• New events in the audit log

• Approve requests from email
• Searching versions with a wildcard
• IPv6 support for MySQL databases

• Improved quick search

• Visibility on approvals
• Disable account verification emails

• Import SLAs
• Events for linked issues
• Syntax highlighting for 25 more languages

No changes

Added support for:

• PostgreSQL 15
• SQL Server 2022
• Pgpool-II

Removed support for:

• SQL Server 2016

Added support for:

• Java 17
• H2 2.1.214

Removed support for:

• Android 4.0

Removed support for:

• MySQL 5.7

Ended support for:

• MySQL 5.7

Added support for:

• PostgreSQL 14 (Server and Data Center)
• Amazon Aurora PostgreSQL 14 (Data Center only)

Added support for:

• PostgreSQL 13

Ended support for:

• Microsoft Edge Legacy

Added support for:

• PostgreSQL 12

End support for:

• PostgreSQL 9.6

Added support for:

• Microsoft SQL Server 2019
• Microsoft Edge (Chromium)

Ended support for:

• MySQL 5.6
• Microsoft SQL Server 2014

Added support for:

• MySQL 8.0

Ended support for:

• Hipchat app (also unbundled from Jira)

Ended support for:

• Microsoft SQL Server 2012
• PostgreSQL 9.4, 9.5
• Solaris
• Oracle 12c R1

Added support for:

• PostgreSQL 11 and Aurora 3.0 for Jira Data Center

Added support for:

• PostgreSQL 10
  

Ended support for:

• Internet Explorer 11

Added support for:

• Aurora PostgreSQL for Jira Data Center
• Oracle 19c
• Oracle 18c

Ended support for:

• Deprecation of several Jira native importers available as part of the Jira Importers Plugin (JIM). We're only supporting import from CSV and JSON.
• Advance notice: Createmeta REST endpoint will soon be removed.

Added support for:

• Oracle 12c Release 2

Ended support for:

• Advanced notice: Ending support for several built-in importers in 8.4
• Advanced notice: Removing Jira CDN dark feature in 8.4

Added support for:

• Java 11
• Microsoft SQL Server 2017

Ended support for:

• 32-bit installers

Added support for:

• Apache Tomcat 8.5.35 (replacing 8.5.32). Added in Jira 8.0.1.

Ended support for:

• PostgreSQL 9.3
• MySQL 5.5

Added support for:

• OpenJDK 8

Added support for:

• Apache Tomcat 8.5.32 (replacing 8.5.29)

Added support for:

• Apache Tomcat 8.5.29 (replacing 8.5.6)

Added support for:

• Microsoft SQL Server 2016

Added support for:

• PostgreSQL 9.6

Ended support for:

• PostgreSQL 9.2

• Jira is getting more resilient to database connectivity dropouts
• User sessions get invalidated across the cluster without the system reboot
• Use AWS Secrets Manager to manage Jira Software configuration
• New infrastructure metrics for in-product diagnostics

Jira Software upgrade notes

Jira Service Management upgrade notes

• Search for projects and issue types in custom field contexts
• Get notified about Jira reindexing only when it’s really required 
• Obfuscate the plain text password in server.xml for Tomcat
• Improvements to Assets import logs

Jira Software upgrade notes

Jira Service Management upgrade notes

• Custom field improvements
• Amazon S3 storage for avatars and attachments
• Microsoft Graph API integration for incoming mail
• The new importSettings field to manage the Developers role 
• Share requests with Jira groups
• Run imports on dedicated nodes and track progress
• Changes to the login-free portal signup flow

Jira Software upgrade notes

Jira Service Management upgrade notes

• New mail queue metrics for in-product diagnostics

• JMX blacklist deserialization filter

• Microsoft Graph API integration with Jira Service Management
• Performance improvements in Assets

Jira Software upgrade notes

Jira Service Management upgrade notes

• Manual index snapshots can be taken at any time
• Comments for approvals
• Updated settings for Assets Groovy scripts

Jira Software upgrade notes

Jira Service Management upgrade notes

• Crowd membership changes batched during full and incremental directory syncs
• Cache App API deprecated
• jira.diagnostics.ipdlog.poll.seconds system property removed from In-product diagnostics
• Further auditing improvements
• Email channels support mailbox folders

Jira Software upgrade notes

Jira Service Management upgrade notes

• Jira migrates to Log4j2
• Support for Java 17 added
• The H2 database upgraded from 1.4.200 to 2.1.214
• In-product diagnostics updates
• Jira Temporary Directory Cleaner introduced
• Improved email filtering

• Auditing improvements for the customer portal and Assets

Jira Software upgrade notes

Jira Service Management upgrade notes

Jira Software upgrade notes

Jira Service Management upgrade notes

• Multi-threaded index catch-up for autoscaling
• Improved accuracy of app attribution for database usage
• New database connectivity metrics for in-product diagnostics
• Login-free customer postal for Jira Service Management
• Insight is now Assets in Jira Service Management

Jira Software upgrade notes

Jira Service Management upgrade notes

• Jira pickers improvements
• OAuth 2.0 for outgoing mail
• Diagnostic recording configuration with JFR

Jira Software upgrade notes

Jira Service Management upgrade notes

• Improved indexing management at Jira start-up
• Remove application monitoring early access preview

Jira Software upgrade notes

Jira Service Management upgrade notes

• Improved indexation for issue-related entities

• Breaking changes in SLAs
• Automation bundled with Jira

Jira Software upgrade notes

Jira Service Management upgrade notes

• Jira can now be configured as an OAuth 2.0 provider
• We've added support for Microsoft GCC accounts

• Improved indexation for issue-related entities

Jira Software upgrade notes

Jira Service Management upgrade notes

Jira Software upgrade notes

Jira Service Management upgrade notes

Jira Software upgrade notes

Jira Service Management upgrade notes

• Improved user assignment and mentioning performance
• Jira Software binary installers bundled with Java 11
• We've changed the data pipeline by adding disk space checks, export schema versioning, and improving exporting user details
• We've added a configurable throttling mechanism to Activity Streams

Jira Software upgrade notes

Jira Service Management upgrade notes

• Bundled JRE disables secure connections to MySQL Community Edition 5.7.27 or older over TLS versions 1 and 1.1
• We've upgraded the embedded H2 database

Jira Software upgrade notes

Jira Service Management upgrade notes

• User-generated custom fields and fields provided by apps are included in the data pipeline export by default
• We've removed obsolete JIM importers

Jira Software upgrade notes

Jira Service Management upgrade notes

• Changes to data pipeline REST responses

Jira Software upgrade notes

Jira Service Management upgrade notes

• We've made small tweaks to some of the email templates. These changes are optional for you.
• We've made some changes to the web.xml file, so make sure to not copy over the old file after upgrading. This could affect attachments in Jira.
• Jira Software: If you're an existing user of Mindville's Insight - Asset Management app, there is some important info that might affect you. Insight has been bundled with Jira Service Management, so make sure to read more about it in the upgrade notes.

Jira Software upgrade notes

Jira Service Management upgrade notes

• For Data Center, we'll move email templates from Jira resources to your Jira shared home directory on upgrade. If you customized the templates, read the upgrade notes for guidance on how to reapply your changes in Jira 8.14.

Jira Software upgrade notes

Jira Service Management upgrade notes

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• Known issue: Azure SQL is reported as unsupported
• Known issue: MySQL 8.0 is reported as misconfigured
• We've added database password encryption.
• We've extended API response to look for archived projects.
• We've added new events in the Advanced audit log for Data Center.
• We fixed a bug that caused issues removed from sprint not showing in Burndown Chart or Sprint Report. This required full reindex.

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• We fixed a bug that caused issues removed from sprint not showing in Burndown Chart or Sprint Report. This requires full re-index.
  
• We fixed fetching updates from different products in Jira.
• We upgraded Embedded Crowd in Jira from version 2.0 to 4.0.
  
• We upgraded Apache Tomcat from 8.5.50 to 8.5.56.
  
• Hipchat got unbundled from Jira.

Jira software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• If you're using Google or Microsoft for incoming mail, we recommend that you create an OAuth 2.0 integration, and reconfigure your mail servers and email channels.

Jira software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• New API to help the Versions view load faster

Jira software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• The new audit log requires that we migrate your current audit log entries. This might take some time, but it will be done in the background.
• We've enabled Garbage First Garbage Collection (G1 GC) for Jira instances running on Java 11.

Jira software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• PostgreSQL 11 support
• OpenID Connect support for Jira Data Center
• Changes in the issue collector
• Disabling HTML in custom fields description
• Changing how agents are treated in SLAs and automation rules
• Changed default behavior of sharing new requests with the customer’s organization

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• API change for JXM monitoring
• Support for PostgreSQL 10
• New JVM code cache check
• New information in the audit log
• Transferring custom modifications from old Jira files

• Better support for reply emails from Outlook by mailhandlers

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• This is the last release to support IE 11

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• To maximize your data security we’ve made the Public Sharing feature OFF by default. We also recommend that you revise your filter, dashboards and user permissions. 
• We’ve introduced extra security measures to make issue attachments and keys safe and inaccessible for anonymous users.
• To help Outlook users respond to Jira notifications we've improved the RegexCommentHandler UI to make it easier to set it up properly. We also advise that you don't use the NonQuotedCommentHandler as it doesn't work with html or rich text emails.
• Email notifications will be batched by default. You can still disable the feature and the feature will remain disabled if you disabled it in a previous version of Jira.
• We've introduced a new way of generating user keys for new users to reduce the number of places we store personal data. All user keys for new users (no changes for existing users) have the following format: JIRAUSER10100.
• If you choose to use one of the new supported databases, Oracle 18c or 19c, you need to download a new JDBC driver. See upgrade notes for details.
• We're upgrading Tomcat to version 8.5.42.

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• Jira is now bundled with AdoptOpenJDK 8 instead of Oracle's JDK. If you're installing Jira manually, you need to install JDK.
• We have upgraded the atlassian-jslibs plugin from version 1.2.5 to 1.4.1 and are now bundling React 16.8.6, ReactDOM 16.8.6 factory, and Marionette 4.1.2 with Jira. 
• When you upgrade you need to reapply any custom changes you've made to your old Jira files to the same files in the upgraded version. We will show you a list of files with custom changes.
• To fix issues importing a backup from Jira Cloud into Jira Server, we needed to change the database column size. Now, Jira might start up slower after upgrade, especially if you're using MySQL database.
• You can now encrypt your database password stored in the dbconfig.xml file.
• We improved the cluster lock mechanism in Jira DC by introducing lock timeouts. When a node loses a cluster lock it will be automatically recoverable without any actions from administrator.

Jira Software upgrade notes

Jira Service Desk upgrade notes

Jira Software upgrade notes

Jira Service Desk upgrade notes

Jira Software upgrade notes

Jira Service Desk upgrade notes

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• After upgrading Apache Tomcat to 8.5.32, we've added new properties to the server.xml file. Make sure you don't copy the old files to the new Jira version, but add the missing properties (or copy your customizations to the new file).
• New properties, controlling the JVM code cache, have been added to the setenv.sh / .bat file.
• Jira Service Desk 3.16 has deprecated the use of com.atlassian.fugue. In Jira Service Desk 4.0, we'll be permanently removing it and updating our APIs to use Core Java Data types and Exceptions instead.

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• Jira Service Desk 3.15 has deprecated the use of com.atlassian.fugue. In Jira Service Desk 4.0, we'll be permanently removing it and updating our APIs to use Core Java Data types and Exceptions instead.

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• We've upgraded Apache Tomcat to 8.5.29. There might be some changes to Tomcat config files, so make sure you don't copy the old files to the new Jira version. See upgrade notes for details.
• We support IPv6, but recommend that you use the mixed mode (IPv4 + IPv6). If your systems are IPv6 only, with IPv4 disabled, some Jira features won't work.

Jira Software upgrade notes

Jira Service Desk upgrade notes

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• Jira Data Center changes cache replication to asynchronous. No immediate actions are required, but make sure you read about this change, and check whether you need to provide extra disk space in the local home directory on each node.

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• Oracle JDBC driver is no longer shipped with Jira. You'll need to download it from the Oracle website, and copy to your Jira installation directory (/lib).

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• Oracle JDBC driver is no longer shipped with Jira. You'll need to download it from the Oracle website, and copy to your Jira installation directory (/lib).
• Account verification emails are sent out to Jira Service Desk customers when requests are raised by email. After the upgrade, project administrators can disable these account verification emails.

Known issues:

• A fix for duplicated job IDs requires extra steps in some instances, just to be sure (checking the database if the index was created; restarting your Jira instance.)

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• Priority schemes (UI changes). We've made significant changes to how priorities are managed in Jira, but these changes are only available from Jira Service Desk 3.9.4.
• We're no longer shipping the Oracle JDBC driver with Jira. You'll need to download it from the Oracle site and move to the /lib directory in the Jira installation directory.

Known issues:

• A fix for duplicated job IDs requires extra steps in some instances, just to be sure (checking the database if the index was created; restarting your Jira instance.)

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• New JDBC driver for Microsoft SQL Server requires a new URL. If you didn't modify the original URL, you can fix it with Jira configuration tool. If you customized the URL, you might need to change it manually.

Jira Software upgrade notes

Jira Service Desk upgrade notes

Important notes:

• New options added to the startup files to enable garbage collection. Just a heads up, no actions required.

Jira Software upgrade notes

Jira Service Desk 3.7 upgrade notes