Windows Live Messenger just released a small update from build 787 to build 792. It seems as though a few items were missing from regional builds, but this should be the final final build. Maybe. Download
Update: The download page has now been removed. As if Windows Live needs anymore confusion than it already has, we now have a Microsoft-signed final build floating around the internet that isn't visibly hosted on Microsoft.com or live.com. If you want the English build, the file is still currently available here. Install at your own risk.