With the Final Fantasy XIII multiplatform annoucement being very recent at E3, a lot of news is coming from the whole situation. With it being rumored to coming to PC, leaked trailers and release dates for a multiplatform release.

Microsoft seemed to have misled us about the 360 version being released at the same time as the PS3 version in NA and EU. Square stated that the game will be completed and released in Japan before localization starts, therefore if they plan to release both versions at the same time, they would have to hold back releasing the PS3 version in other territories outside of Japan until they finish development and localization on the 360 version…this would be so fuckin’ stupid I can’t see Square doing this. And considering they aren’t even starting development on the 360 until they finish the PS3 version in Japan, releasing both versions in NA and EU at the same time seems very unlikely.

News taken from here