At Least Diablo III, the Book, Will Be Out This Year

There's still no firm date on Blizzard's next entry in the Diablo series, but at least one of the game's official tie-ins, Diablo III: Book of Cain, is expected to arrive in 2011. So what is Diablo III: Book of Cain? » 6/29/11 4:40pm 6/29/11 4:40pm