Mike Morheime has clarified what�s going on with the launch date.Blizzard games are like buses: you wait for ages, and then two turn up at once. In their ongoing investor call, Activision-Blizzard hinted that Diablo 3 might be ready for 2011, but that they wouldn�t rush the game out to hit a deadline.�

Mike said that �the game does not have a launch date. We�re working very hard to try and release it this year, but we will not compromise on quality.� He also confirmed that the Diablo 3 beta will hit in the third quarter of 2011. Squee!

During Activision�s financial predictions, they carefully noted that the predictions were based around �not expecting a Blizzard game in 2011′. But the company pointed out that if their prediction were to come true, �we�d expect two Blizzard titles in 2012.

If we had our betting hats on, that would put the Diablo 3 release date as early 2012, with a new World of Warcraft expansion hitting late 2012, and Heart of the Swarm landing in 2013.
Diablo 3 beta in Q3; Blizzard hoping to launch full game in 2011 but “will not compromise on quality” | PC Gamer