Hmm. I expect MGS4 proper to go multiplatform first or MGS4 to get the Sigma treatment for the 360 with a Kojima protege helming the effort. I'm sure Kojima is fighting as well as he can, but I think Konami will demand some form of MGS on the 360. S-E can afford to remain on the PS3 more than Konami. Look how totally overwhelming the DS had to be before they moved DQ to it. If there's any company that seems to resist change, it's S-E. They *create* sales and don't need to change.
I think Konami is much further down the path of Capcom than S-E is. I would be very surprised if S-E is not the last big Japanese hold out (unless we're considering Level 5 big
).