I have been spending the majority of my time working on iPhone Doom Classic for several weeks now, and the first beta build went out to some external testers a couple days ago. I am moving back on to Rage for a while, but I expect to be able to finish it up for submission to the App Store next month.
Wolfenstein 3D Classic was a quickie project to satisfy my curiosity and test the iPhone waters, but Doom is a more serious effort. In addition to the millions of people with fond memories of the game, there is still an active gaming / development community surrounding the original Doom, and I don’t want to disappoint any of them.