Player subscriptions for World of Warcraft has dropped to 9.1 million worldwide, Activision Blizzard announced today. Last quarter, total subscribers were at 10.2 million. It's not all bad for Blizzard, however. Diablo III has sold more than 10 million copies since launch. 1.2 million of those came from the World of Warcraft Annual Pass.

The upcoming World of Warcraft expansion, Mists of Pandaria, launches September 25, 2012.