All 4 Rayman fans on PS3/360 convinced Ubisoft otherwise.
If the game is finished on Wii U, it would be in their best interest to release it already since, as others have stated, it'd be going up against nothing on Wii U this month. It still has a good chance of performing best sales wise on Wii U... unless Wind Waker HD launches near it. Otherwise, it's going to get trampled by a remake of a decade old game.