smileynev said:cube supposedly will be backwards compatible. I read somewhere that the xbox for some reason was not. PS3 probably will be because they are evil.
Both the Revolution and PS3 are logical evolutionary steps, and sony always had in the plans to have the previous generation shrunk to fit on a single chip by the time the next generation has come around. The sound processor for the PS2 is basically the PS1 in chip form and im sure they have done the same for the PS2
Gamecube was a PowerPC system anyways, and Cell has alot in common with PowerPC architexture. About the closest that Microsoft has been able to say is that they want to but the dont know if its possible yet. I really doubt they are going to be able to pull it off unless they do it in software somehow.