Turns out those blood-thirsty demons just won't stay dead. Id Software has announced that Doom 4 has begun production as of today. According to the press release, the studio is now hiring for the project. Said CEO Todd Hollenshead, "Doom is part of the id Software DNA and demands the greatest talent and brightest minds in the industry to bring the next installment of our flagship franchise to Earth."
No other details were given, but we're guessing it'll run off of id Tech 5 (or perhaps something greater). Given the ending of the Doom 3 expansion Resurrection was pretty conclusive, we don't know where the team will take the Doom story next. Our guess? Probably send a space marine to Hell to fight demons. Perhaps this time he (or she) will pack a better flashlight.
Id Software is a prolific partner of Activision, who published Doom 3, Quake 4 and Quake Wars. Check out Activision's Family Album to learn more about the company's internal studios.