Blizzard has been recruiting on its website most of this year for team members to work on a "Next-Gen MMO" project, but it has never publicly confirmed that the mysterious title is in development. Some observers have pessimistically suggested that "Next-Gen MMO" is just a hyped-up way of saying "Wrath of the Lich King."
Thankfully, it turns out they were wrong! Official confirmation (of a sort) has come. A Blizzard employee who goes by the forum name of Drysc responded to forum posts speculating about the project. He (or she, maybe -- it's like a female Night Elf Hunter; you can never know) said, "it's an unannounced Next-Gen MMO. And that doesn't mean an expansion for World of Warcraft either."
So Drysc confirmed what most of us already suspected. Hey, better than nothing. So ... is it World of Starcraft? Do we want it to be World of Starcraft? Hmm.