And it's a vehicular shooter. The game will be based on Carmack's new graphics engine, which makes use of the innovations that made Quake Wars' large maps possible. There's even going to be some co-op multiplayer. Gadzooks.
This is the tech demo from some computer expo thing:
So a racing game with better-than-Doom 3 visuals. A new direction for Id? Or their final undoing? Only time will tell.
In related news: all the Id games are now on Steam.