As stated by Hashimoto back at the Square Enix press conference during E3, the Xbox 360 version of FFXIII will not begin until the PS3 version was completed. This was reconfirmed by Nomura in a video shown during the DKS3713 event where he said:
“We haven’t changed the direction of the development. We’re making the PS3 version first, and then porting to the 360 later.” That means that since the game will be released simultaneously on both platforms in North America and Europe, the PS3 release will be held back in those territories until the 360 version is complete.
Gotta love those contractual obligations! At least Square Enix and Nomura are being honest about it. In fact, the 360 version isn’t even on the company’s “minds” yet:
Furthermore, Toriyama also revealed that, as of July 29, his team hasn’t yet received the tools needed to begin work on the Xbox 360 version of FFXIII. “I’m telling them to not think about the Xbox 360 right now,” he said. “We can think about it after the development kits arrive.”
As for potential comprises for porting? Nomura said:
The designer also reassured PS3 owners that the game’s quality would not suffer due to the 360 port. “We aren’t going to change any specifications [of FFXIII] because of the multi-platform announcement,” he declared. “Right now, we’re fully concentrating on the PS3 version.”
Very nice. He then took the time to debunk the possibility of a PC version of FFXIII. Not surprising since there has been a port of a traditional Final Fantasy game for the PC platform since Final Fantasy VIII.