According to Kotaku, id Software brains are already playing with iPhone SDK for awhile and preparing Wolfenstein and Doom 2 RPG for mobile phones.
They did not clearly stated that they would certainly develop the games for iPhone but I am sure they will surprise us to invade iPhone gaming sector as soon as possible before the competitors.
Well, smart guys on at HermitWorks have ported Quake 3 Arena to iPod Touch and so, possibly on iPhones. Here is the proof video. What you will see is the impressive video of Quake 3 being played on 2 iPod Touch through the networking mode of the game. There are not much details how they achieved it, but it is a signal that excellent commercial iPhone games will be all around before the end of 2008.
Last week we reported the classic shooter game DOOM was ported to the iphone. Well, the problem was the game controls weren't implemented yet. So the only thing you could do so far is watch Doom in demo mode. On google code the dev community is very willing to help each other with ideas to implement the controls. Well the pics here are some ideas to it (click to blow-up). I am very interested which design will be chosen by the developer. Basically the "buttons" will be hot zones on the screen. If you got better ideas, goto the community and drop your design there. I will wait and see because I like to play DOOM on my iPhone too.