This is the release notes for XWiki Commons, XWiki Rendering, XWiki Platform and XWiki Enterprise. They share the same release notes as they are released together and have the same version.
This bugfix release addresses some important problems discovered in the 8.4 release, like the translations issue, but also brings a couple of improvements, specifically focused on the Active Installs application and the Blog UI.
New and Noteworthy (since XWiki 8.4)
Full list of issues fixed and Dashboard for 8.4.1.
For Users
Consistent Blog Icons
The icons used in the Blog Application are now displayed using the Icon Theme Application, hence they are now consistent with icons used everywhere else in XWiki.
For Admins
Active Installs displays Distribution Graph
The Active Install application now displays a graph showing what packagings users have used to install XWiki (Debian, WAR, HSQLDB/Jetty, etc). You can see it live on xwiki.org.
Miscellaneous
Get all org.xwiki* distributions: The graphs now matches all org.xwiki* distributions (used to only match XWiki Enterprise). Before, we were filtering on the org.xwiki.platform:xwiki-platform-web distribution id but since we now send the packaging used in the distribution id property, we needed to find a way to list all distributions done by the XWiki open source project.
For Developers
An InstanceId converter has been added so that it's now possible to convert from String to InstanceId and vice versa (useful for Velocity scripts needing to call an API that accepts an InstanceId object for example).
All Changes
Translations
The following translations have been updated:
Tested Browsers & Databases
Here is the list of browsers we support and how they have been tested for this release:
| Browser | Test Result | |
|---|---|---|
 | Google Chrome | Not Tested |
 | Mozilla Firefox 50 | Jira Tickets Marked as Fixed in the Release Notes + New and Noteworthy Features |
 | Internet Explorer 10 | Tested |
| Internet Explorer 11 | Not Tested |
Here is the list of databases we support and how they have been tested for this release:
| Database | Test Result | |
|---|---|---|
 | HyperSQL | Tested |
 | MySQL 5.7 | Jira Tickets Marked as Fixed in the Release Notes + New and Noteworthy Features |
 | Oracle | Not Tested |
 | PostgreSQL | Not Tested |
Performances tests compared to 7.4.5
Known issues
Backward Compatibility and Migration Notes
General Notes
When upgrading make sure you compare your xwiki.cfg, xwiki.properties and web.xml files with the newest version since some configuration parameters may have been modified or added. Note that you should add xwiki.store.migration=1 so that XWiki will attempt to automatically migrate your current database to the new schema. Make sure you backup your Database before doing anything.
API Breakages
No API has been broken since XWiki 8.4!
Credits
The following people have contributed code to this release (sorted alphabetically):
Eduard Moraru
Guillaume Delhumeau
Marius Dumitru Florea
Pascal Bastien
Thomas Mortagne
Vincent Massol
