Developer id Software today confirmed what has been long expected, it has begun developing the fourth game in the long-running Doom franchise. The announcement comes nearly 4 years after id released Doom 3, the last internally developed game from the studio.

It's unknown what platforms Doom 4 will appear on, but considering that id is developing Rage a new franchise that blends vehicular combat with first-person action in a sci-fi setting for the PC, Xbox 360, and PlayStation 3, its likely that Doom 4 will appear on those platforms as well. No details were given on the content of the game or its expected release period, though.