Details have already leaked, two weeks prior to BlizzCon about the next exp, planned for Q4 this year or late Q1 2010. This might be the nail in the coffin for WoW. Alot of the boards are already bashing the game and up coming exp called World of Warcraft: World of the Cataclism(sp). Featuring a new zone, 2 new race skins, no new classes, and 5 more lvls!

Aka... The same thing as the first ----> second exp ------> third exp and know the fourth! Alot of the people on the boards are already talking about cancelling the subscribition if the game has no real content changes in the next exp!