Pseronally I don't know why they bother with this franchise..
Double Agent looks bloody good as a multi-platform title so I think they should just release the next one multi-plat & spend much more time developing the gameplay/animation than wasting any more time making an incredibly pretty looking game, "prettier"..
Sure graphics are nice but unless things "move" & "play" well every game has "suck-potential".. You only have to look at the lack of high resolution textures on AC to see that graphics "horsepower" definitely don't make a game "look pretty" (I.e. AC looks damn gorgeous without having some of the "umm" and "ahhh" of games like GOW which seem to focus so much on eye-candy..) without good art direction and how the introduction of new gameplay paradigms/systems can make even the most "so-so looking game" into a killer app (a la GTA..)