I say this because in a leak it mentioned (the leak is dealing with bungie's new game, plus it's mentioned on the front page idk if we're allowed to discuss it, if a forum ninja could tell us if we can that would be great). Anyway the article talking about said leak said the first edition of the game will be available on the 360.
That being said, since bungie hasn't stated when the next game will be released,or even talked about it for that matter, I think its safe that the new xbox wont be coming out till 2014 or 2015.
I would post the article but i don't know if w' are allowed to discuss the leak (since leaks are forbidden here) but since bungie posted some concept art on the front page idk if it's ok to post the link