New High-Level Content: Explore newly opened parts of the world, including Uldum, Grim Batol, and the great sunken city of Vashj'ir beneath the sea, and enjoy even more high-level raid content than in previous expansions.
New PvP Zone & Rated Battlegrounds: Take on PvP objectives and daily quests on Tol Barad Island, a new Wintergrasp-like zone, and wage war in all-new rated Battlegrounds.
Archaeology: Master a new secondary profession to unearth valuable artifacts and earn unique rewards.
New Race and Class Combinations: Explore Azeroth as a gnome priest, blood elf warrior, or one of the other never-before-available race and class combinations.
Ten bucks says Ozzy sings "Bark at the Moon" accompanied by Worgren footage.