World of Warcraft: The War Within promises to overhaul most classes with the launch of the expansion, and most of these changes are available to try out now with the release of TWW prepatch. In addition to Skyriding for virtually all mounts, a new introductory expansion questline, Warbands, and the new Radiant Echoes event, the 11.0 pre-patch also added TWW Talent and base class changes in preparation for the expansion (sans Hero Talents).