well, "Blizzard CEO Mike Morhaime has confirmed to Geoff Keighly and Kate Hunter that the just-revealed World of Warcraft expansion Cataclysm and StarCraft II are only titles the company expects to release in 2010."
And probably Blizzards new mmo in 2011 and no way in hell theyre releasing diablo 3 and the new mmo in the same year...