I think the current gen will be a drag on next gen consoles for a while due to lack of built-in BC. Microsoft most likely won't have any; I don't expect Sony's streaming alternative to be up and running from day 1, and we don't know how much it'll cost or how it even works.
It'll be a while before either next-gen box pulls away from it's predecessor as a viable purchase outside the hardcore fanbase. Unless both come out for, like, $250 or something. :p








