+* Added MessageCache::get hook as a new way to customize messages across
+ multiple sites.
+* Added jquery.throttle-debounce ResourceLoader module to limit the number of
+ callbacks for frequently occurring events.
+* Special:ProtectedPages shows now a table. The timestamp, the reason and
+ the protecting user is also shown.
+* Added experimental support for using Microsoft SQL Server as the database
+ backend.
+** Added new Microsoft SQL Server-specific configuration variable
+ $wgDBWindowsAuthentication, which makes the web server authenticate against
+ the database server using Integrated Windows Authentication instead of
+ $wgDBuser/$wgDBpassword.