According to Pure Nintendo, Ubisoft plans to release Raymand Legends for the Wii U on February 26th. I’m not sure where their information is coming from though, so I’m wary to say if this is completely confirmed.
Update: This is Ubisoft’s official response:
Rayman Legends is scheduled for release in early 2013. The team is working hard to finalize the game and is looking forward to sharing more details with fans very soon!
At least it’s not a flat-out denial.