While Ubisoft does not specifically mention the 360 and PS3 by name, the developer and publisher announced the platformer for "HD consoles" and the blog entry's statement that PC, Wii, 3DS and iPad versions are "to be considered" settles the matter.
Ubisoft also promises that the 'UBIart Framework' Rayman Origins that is built upon--described as "a complete 'homemade' solution for creating and editing levels and characters"--will be open-sourced in 2011.
The remaining Rayman Origins episodes will be released in 2011. Pricing remains unknown, though Ubisoft has stated that "the size of each episode and its replayability must be important enough to make the players feel... fulfilled."