Speaking at Activision's earnings conference call last night, Blizzard president Mike Morhaime revealed that the developer is planning to hasten development on World of Warcraft expansions to reduce the amount of subscribers lost--the "churn" rate--once the new content has been exhausted.

"What we have seen so far is that people have been consuming this content very quickly and so the subscriber levels have decreased faster than in previous expansions," Morhaime said, speaking about WoW's latest expansion Cataclysm, which was released in December 2010. Read more »