We just finished the update to the main server!
The final set of changes that are now live are documented in our server release notes. Now its time to go an apply tags to your favorite MusicBrainz data!
Thanks to Dave, Lukáš, Murdos, Acid2 and Jugdish for contributing towards this server release! Its been a long time in the coming, but we managed to squeeze in a number of significant improvements in this release.
UPDATE: One of the changes to the database will cause a few Edit Relationship edits to fail. (e.g. #76493) — sorry for the inconvenience!
MetaBrainz Blog 
Thanks as always for all your hard work!
Every new server update, MB gets cooler, thanks to all that made it possible.
Great work guys! Folksonomy tags are great!
Cheers!
neat-o!
great work.