These are some latest patch notes for WoW Public Test Realm:
Mac
* Improved memory usage and stability under Mac OS X 10.4.9 using multi-threaded OpenGL
Bug Fixes
* Attempting to turn in a guild charter with a signature from a player that formed his own guild will no longer result in an inappropriate error message.
* Using the customer support "Auto-Unstuck" will now trigger the one-hour cooldown on the player's hearthstone.
Arenas
* Players will no longer be able to see their opponents in the Combat Log of an Arena match-up before the game starts.
Battlegrounds
* Eye of the Storm: Players should no longer be able to exit the bubble before the match starts.
Mechanar
* The gate at the top of the elevator in Mechanar will now remain open while attempting the gauntlet and after Pathaleon the Calculator is killed.
Caverns of Time: Old Hillsbrad
* The Escape from Durnholde event will no longer break during the church part of the encounter.
* Various localization fixes have been applied.
These patch notes will be on the official website soon.