Cataclysm

[Moomoomoo]

Yup, new expansion announced at blizzcon...
World of Warcraft: Cataclysm announced

also, you can see the OFFICIAL SITE!!!!1!!1! here
World of Warcraft: Cataclysm

among the new things are
* Barrens is split in two. Darkshore is flooded.
* New zones: Uldum, Grim Batol, the Sunken City of Vashj'ir.
* "More raid content" than previous expansions
* A new "Wintergrasp-like zone" called Tol Barad
* Archaeology, the new secondary profession, lets you "unearth valuable artifacts and earn unique rewards"
* The new starting zones will be heavily phased, and will be similar to the DK starting zones
* Azshara is now a low-level Horde zone connected directly to Orgrimar
* Azeroth will be changed whether you buy the expansion or not

also: new races (worgen for alliance, goblins for horde), flying mounts can be used in azeroth, new race/class combinations, level cap increased to 85