Speaking in some kind of interview, iD Software's John Carmack talked about development on other platforms, including the Wii U, and unfortunate time constraints that makes things difficult:

"I wish that we could deploy this (Doom 3 BFG Edition) on a bunch of other code bases. I love platforms. I love looking for the fun things to do on different ones. I've been bringing up quietly at a bunch of the meetings, "You know, we could make a Vita version, a Wii U version, an iPhone/Android version." All of these would be reasonable platforms to take this technology. We do have a very busy development schedule and nothing else is really planned for that." - John Carmack"