This release mostly focuses on the Flaming skin and sets it as the new default skin for XWiki. A new themes application for the new skin is introduces, along with the AppBar set by default and other various UI polishes and improvements. On the developers side, a new "blame" API has been introduced and some dependencies were upgraded. Finally, a considerable amount of bug fixes (34) and improvements (32) were made so make sure to try it out.
Full release notes available at http://www.xwiki.org/xwiki/bin/view/ReleaseNotes/ReleaseNotesXWiki62M2
See http://jira.xwiki.org/secure/IssueNavigator.jspa?reset=true&jqlQuery=category+in+%28%22Top+Level+Projects%22%29+and+fixVersion+in+%28%22%36.%32-milestone-%32%22%29+and+resolution+in+%28%22Fixed%22%29 for more details