I think the next version of cod will be releaed for Wii U, already seen rumors of it. Besides, who else is going to release a fps for the Wii U, surely not EA. Their next fps, done by Respawn Entertainment, is going to be a xbox360/720 exclusive. Activision might want to think of investing a little more in the Wii U side of things if the xbox fanboys are going to jump ship for the new EA game.
Just incase you kids cannot remember, the guys that formed Respawn Entertainment are the ex infinity ward guys that were fired let go by activision about 3 or 4 years ago.