The World of Warcraft team is happy to announce the release of the new 2.2.0 content patch.
Highlights of Patch 2.2.0:
Voice Chat: The new Voice Chat feature is now available. Players will need
to go into the Options menu under Sound & Voice to activate it.
Mac Movie Capture: The Mac client can now capture in-game video to QuickTime movie files using a configurable choice
of codec, resolution, and frame rate.
For more information, check out the full patch notes.
Original post by World of Warcraft Community Site