If certain retailer listings are to be believed, it appears that Rayman Origins won't be confined to the Xbox 360 and PS3 when it's released this holiday. Amazon has posted a listing for a Wii version of title, including the convincing box art seen here. Furthermore, a purported GameStop new release list mentions both a Wii and DS version of Rayman Origins. For what it's worth, both GameStop and Amazon specify a November release date.
While Ubisoft hasn't confirmed anything outside of the 360 and PS3 versions, a port to DS or Wii certainly seems possible, especially given the game's 2D presentation.