A million units sold in the quarter ended December 31.
Blizzard's goal is to "bring Diablo 3 to as many players as possible".
Diablo 3 expansion gets global launch on March 25.
PS3 and Xbox 360 versions have pleased Blizzard.
Will make its public debut at BlizzCon 2013.
'Dark expansion' introduces Death and a new character class.
Blizzard opens mysterious new Diablo 3 site.
Kotick and partner stump up $100 million of their own money.
Doesn't sound likely to be the title of a new game from the makers of WoW, StarCraft and Diablo.
PS4 date still to be announced.
Also limited availability of tickets to an exclusive dinner.