Documentation for JIRA 5.2. Documentation for other versions of JIRA is available too. 
2011 年 1 月 31 日
The Atlassian JIRA team announces the release of JIRA 4.2.3. This point release contains several updates and fixes, plus a new release of the JIRA Importers Plugin, providing improved support for Mantis and CSV imports. Please see the documentation: Importing Data from Mantis and Importing Data from CSV.
JIRA 4.2.3 is of course free to all customers with active JIRA software maintenance.
Don't have JIRA 4.2 yet?
Take a look at all the new features in the JIRA 4.2 Release Notes and see what you are missing out on!
Upgrading from a Previous Version of JIRA
If you are upgrading, please read the JIRA 4.2.3 Upgrade Guide.
Updates and Fixes in this Release
JIRA 4.2.3 includes the following updates and bug fixes:
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