Here’s the headline from the new page up at worldofwarcraft.com:
An ancient evil lies dormant within Deepholm, the domain of earth in the Elemental Plane.
There’s a video clip there as well as links to both Goblins and Worgen, the two new playable races. There are two new zones (Gilneas and Lost Isles), new race / class / profession combos, and more, including an increase in the level cap to 85. Archaeology is a new secondary profession. Of course there are new bad guys and a bunch more raid content. Hit the link to take it all in.