On the case of the visual upgrade next gen: I think it can have a significant boost in graphics next generation on the 1080 P (and manybe 3D). Because most games now are "only" in 720P. Some of them have even a lower resolution. The reason for this is ofcourse because the current generation can't handle a lot going on in the screen 1080P. Next generation msot of the games will have that 1080P which can give another boost. Of course it's not that big of a difference between SD and 720P, but still visible.