John talks at length about the process of bringing "DOOM" to the iPhone, debating whether to update the art (as he did with "Wolfenstein 3D"), but in the end it looks like we'll be getting a classic-looking "DOOM," which is fine by me.
The most exciting aspect about the release, though, is the inclusion of multiplayer over WiFi. There haven't been too many iPhone games that support this kind of feature (especially not shooters), and the prospect of getting one of the earliest multiplayer shooters up and running on the iPhone gets me pretty giddy inside. After launch the game will be updated with the iPhone's 3.0 firmware to allow for Bluetooth multiplayer, as well, which means you won't even need a net connection to play nearby friends.
I've spent a good 6 hours with "Wolf 3D" on my iPhone, and I'm sure "DOOM" will follow suit.