He notes that the “technology level… brings it up to parity with the other consoles, which is nice…” The Wii, he adds, was not “suitable” for the company’s new engine, though it was a prime candidate for their iOS Rage technology. Disappointingly nothing came out of it because “[id] decided that it wasn’t the right time to jump into the Wii market.”
The Wii U has him excited, especially the touch-screen controller he raves about. There’s more in the Gamespot interview, so check that out.
id Software is currently working on Rage, which is due out this October on PC, PS3 and Xbox 360. They are also working on Doom 4.