Jira Core 9.12.x release notes
29 November 2023
We're pleased to present Jira Core 9.12 Long Term Support (LTS).Take some time and read through the release notes to learn what we've prepared for you this time. Swing by our upgrade notes to check for any breaking changes if you plan to upgrade, and don’t forget to check out the full list of resolved issues .
Highlights
Jira Core 9.12 is a Long Term Support release
This means we'll provide bug fix releases until Jira 9.12 reaches its end-of-life date (November 29, 2025) to address critical security, stability, data integrity, and performance issues.
Ready to upgrade? Check out the release notes for a roll-up of changes since 9.4 LTS.
If you’re upgrading from Jira 8.x or Jira 9.x, see Upgrading Jira applications for all the necessary steps.
Jira Core 9.12.x is the last release to support Server licenses
Jira Core 9.12 will be the last release available to download for Server, prior to the Server end of support date on February 15, 2024. All following releases will only support our Data Center offering. As Jira Core 9.12 are long-term support (LTS) releases, they will continue to receive security and bug fixes until the end of support date on Feb 15, 2024.
We recommend that you migrate to the Atlassian Cloud offering or upgrade to Data Center to remain secure and supported. If you're thinking of moving to Data Center, check our recommendations first.
Upgrading from 8.x to 9.x triggers full Jira reindex that causes some downtime during the process. If you’re on 8.x now, make sure you’ve estimated the downtime and set the best time for the upgrade.
Learn more about how to handle full reindex and estimate downtime
End-of-life policy
Atlassian supports feature versions for two years after the first major iteration of that version was released. Once a version reaches its end of life (EOL), we’ll no longer provide support for it. Here are the EOL dates for Jira Core 9.12, 9.4, and 8.20:
- Jira Core 9.12: 29 November 2025
- Jira Core 9.4: 15 November 2024
- Jira Core 8.20: 31 January 2024
For more information, see the Atlassian Support end-of-life policy .
Version compatibility
Each version of Jira Core, Jira Software, and Jira Service Management is compatible with a specific version of the other applications. Here’s the compatibility for Jira Software 9.12, 9.4, and 8.20.
| Jira Core | Jira Software | Jira Service Management |
|---|---|---|
| 9.12 | 9.12 | 5.12 |
| 9.4 | 9.4 | 5.4 |
| 8.20 | 8.20 | 4.20 |
For more information, see the Jira applications compatibility matrix .
What's changed since the last LTS release
Jira 9.12 is a Long Term Support (LTS) release. It contains all features introduced since the last LTS version, Jira 9.4 , and provides fixes for known issues in this version.
If you’re interested in learning more about a specific type of improvement, you can go to one of the following sections:
To get a quick roll-up of the most important changes in the previous Jira LTS releases, have a look at our past change logs:
Top features
Here's a summary of the great new features that await you after upgrading to Jira Core 9.12.
The summary of changes is divided by the versions in which they were released, but it doesn't mean you have to upgrade through each version separately. You can go straight from 8.20 or 9.4 to 9.12.
Release | Summary | Release notes |
|---|---|---|
9.11 |
| |
9.10 |
| |
9.9 |
| |
9.8 |
| |
9.7 |
| |
9.6 |
| |
9.5 |
| |
9.4 | This is an LTS release, which doesn’t introduce any new features to keep things running smoothly. |
Critical bug fixes
Every release contains a bunch of bug fixes. Here is the list of fixes to issues with critical severity since version 9.4.
Release | Summary |
|---|---|
9.11 | |
9.10 | |
9.9 | |
9.8 | |
9.7 | |
9.6 | |
9.5 | |
9.4 |
Performance reports
We run extensive performance tests to compare our Long Term Support releases to see how the new features affect Jira and to make sure we’re not introducing any performance regressions. LTS releases are usually a few versions apart, so the improvements in performance are much more visible than between smaller, feature releases.
Resolved issues
Issues resolved in 9.12.0
Released on 29 November 2023
Issues resolved in 9.12.1
Released on
Issues resolved in 9.12.2
Released on
Issues resolved in 9.12.3
Released on
This bugfix release doesn't contain any public issues. At the same time, it contains internal improvements that are restricted to Atlassian for security reasons.
Issues resolved in 9.12.4
Released on