Bliz just announced the release date for the next (and last pre-expansion) content patch: December 5th.
There are tons of changes; most notably all classes are getting their new talent trees and the completely reworked pvp rewards system is being introduced. Also, vanish has been fixed and mages get a new spell icon! You can check all the details in Lime’s post here. (It’s in the member forum, so you’ll need to be logged in.)