Ubisoft expected the Wii U to be released much earlier than this winter, Rayman creator Michel Ancel told Nintendo Power magazine (via Nintendo Everything).
In fact, Ancel even began work on Rayman Origins for the new system.
"To be honest, we were on Wii U very early - even for Origins," said Ancel.
"We did not know exactly when Nintendo would release the system, but we started making Origins for Wii U. [At that point], we thought Wii U would come out a lot earlier. We worked very closely with Nintendo [on Wii U] early on, giving them feedback on the various prototypes.
"When we finished Origins, it was time to start thinking about Wii U again, because [the hardware] was nearly complete."
Sadly it appears all this time working with Wii U hasn't helped the development team get Rayman Legends out in time for the Wii U launch - earlier this week Ubisoft confirmed the game will now ship in Q1 2013 to enable expectations to be exceeded.