That video of Rayman Legends wasn’t supposed to reach anyone outside of Ubisoft according to a recent statement by the publisher. VG247 recieved clarification from Ubisoft, where they addressed the video as a “Internal Leak”.
“An internal video showing images of Rayman Origins’ sequel has leaked over the internet. This video was intended as a purely internal demonstrative video, and in NO way represents the final game, the final console or their features.”
The video was at least a good measure of interest for a Rayman Origins sequel, as many fans have expressed jubilation to see the new features and Wii U functionality. Perhaps Ubisoft will have a more finalized version to show off at E3 in a little over a month.