Hacker Reveals New Xbox 360 Disc Format, Full details

[d21lewis]

I think a single GB increase is pretty substantial.  I mean, I instal tons of games and most end up being just 4 or 5GB.  And these are big games.  Heck, some aren't anywhere near that size.  Just look at the downloadable games from XBL and the PSN.  It's not the size of the disc, it's what they do with it.