This is the first milestone of the XWiki Enterprise 4.3 version. This release brings several improvements in Workspaces, Extension Manager, Distribution Wizard and the REST API. It is also possible to activate the multiwiki feature when using the HSQLDB database (i.e., in the standalone version of XWiki Enterprise). It also provides several important fixes for bugs related to importing Office Documents while using filesystem attachments.
See http://www.xwiki.org/xwiki/bin/view/ReleaseNotes/ReleaseNotesXWikiEnterprise43M1 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%34.%33-milestone-%31%22%29+and+resolution+in+%28%22Fixed%22%29 for more details