Rayman Legends is real and coming to Wii U
Originally leaked by a French gaming site and later confirmed by Ubisoft, Rayman Legends has an “internal video" of the Rayman Origins sequel. It shows off the philosophy behind the design, as well as outlining a number of Wii U specific features. Ubisoft has made it very clear though, this video “in NO way represents the final game, the final console or their features”.
I suppose when they state they, it is specifically to mitigate all the Wii U specific functions that this video implies the game will support. Like the tablet controller being used to interact with all the other players within a game. Or the development of Near Field Communication figurines (like Skylanders), that will be used to augment you gaming experience. They even imply that Ezio Auditore of Assassin’s Creed could be one of those figurines (SOLD!). Here is that video.