Upgrade Guide 2.5.6
Who should upgrade?
Confluence 2.5.6 is a recommended upgrade that resolves a number of security bugs and other issues you may have encountered in Confluence 2.5.5 or earlier.
As such this release is a recommended upgrade for all customers.
Confluence 2.5.6 can be downloaded from http://www.atlassian.com/software/confluence/ConfluenceDownloadCenter.jspa, and is a free upgrade for all customers who purchased their Confluence license or maintenance renewal after August 8th 2006.
If you are running a release older than 2.5 and you want to upgrade, you should upgrade directly to 2.5.6. Refer to the upgrade procedure below.
Upgrading Confluence should be fairly straightforward. We strongly recommend that you backup your
confluence.home directory and database before upgrading!
If you are upgrading from Confluence 2.2.x or a later version, please see the Confluence Upgrade Instructions.
If you are upgrading directly from 2.1 or earlier, you should also read the 2.2 Release Notes for warnings about the 2.1 -> 2.2 upgrade.