The plan was to release Rayman Origins on the console at launch.
Ubisoft expected Wii U to be released earlier than November 18th, 2012, Rayman creator Michel Ancel told Nintendo Power magazine (via Nintendo Everything).
Truth be told, Ancel even began work on Rayman Origins for the new system.
To be honest, we were on Wii U very early – even for Origins.
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.
Earlier this week Ubisoft confirmed Rayman Legends’ delay, a sign that working together with Nintendo to release the game on Wii U in time for launch didn’t work out too well.