In the upcoming issue of GameInformer, Bethesda reveals all-new information on Elder Scrolls: Skyrim, but that's not the only thing they are revealing. Aside from Skyrim, Bethesda's next project will also be revealed.
GameInformer editor Andrew Reiner posted on his Twitter: "In addition to Skyrim, this issue holds an unannounced sequel. Guess away!"
Update: The sequel in question isn't from Bethesda. The comment made on Twitter has been clarified and the game is just a new sequel from another developer.