XWiki Enterprise 3.5 Milestone 1 brings many improvements to the Extension Manager, a new macro for displaying documents in a live table and quite a few bug fixes. This is the only milestone of the 3.5 release, which is the last release of the 3.x cycle. The next planned release is 3.5 final.
See http://www.xwiki.org/xwiki/bin/ReleaseNotes/ReleaseNotesXWikiEnterprise35M1 for more details.
See http://jira.xwiki.org/secure/IssueNavigator.jspa?reset=true&jqlQuery=category+in+%28%22Top+Level+Projects%22%29+and+fixVersion+in+%28%22%33.%35-milestone-%31%22%29+and+resolution+in+%28%22Fixed%22%29 for more details