This surprised me. The new Metal Gear is coming to the 360, but MGS 4 won't (as far as we know). Isn't this a bit stupid by Konami? Xbox only owners miss an important part in the story.
Only think I can think of is that Sony secured exclusivity (so why didn't they do it for FF XIII?), which isn't timed.
(note that the MS conference isn't over yet, so anything can still happen)