Famed id Software programmer and mad rocket-scientist John Carmack recently spoke to MTV's Multiplayer about the iPhone projects they have in the works. There's two separate articles, the first
confirming that Quake, Quake 2 and Rage are going to be coming to the iPhone, and that Quake 3 might also make it (especially with the 3G S in the picture, which offers increased processing power). Wolfenstein RPG and Doom 2 RPG are also in the works already, and Doom Classic is apparently only a couple of weeks away.
discusses Doom Resurrection, a lightgun-on-rails shooter in the Doom universe. Definitely will be interesting to see how much id can push the hardware of the platform!