WoW has reached a new milestone, with a player base now totaling more than 9 million subscribers worldwide. The company is currently working with its partner for World of Warcraft in China, The9, to prepare the game's first expansion, World of Warcraft: The Burning Crusade, for launch in mainland China and anticipates an influx of new and returning subscribers in conjunction with that event.

"We're thrilled that gamers around the world have continued to embrace World of Warcraft so enthusiastically," said Mike Morhaime, president and cofounder of Blizzard Entertainment. "We've worked hard to provide a compelling experience for our players, and we plan to continue updating the game with exciting new content for them to enjoy for many years to come."

Blizzard's Burning Crusade expansion released to critical acclaim in several regions earlier this year and shattered PC-game sales records in North America and Europe, with nearly 2.4 million copies sold in its first 24 hours of release and approximately 3.5 million in its first month.