The November issue of Electronic Gaming Monthly (EGM) reports that although info on Final Fantasy XIII is tight and hard to squeeze out of Square Enix, one tidbit has popped out, Final Fantasy XIII is up and running on Playstation 3 hardware as of now (see scan 1). Whether FFXIII has just gotten up and running on PS3 hardware recently or if it's been up and running and this info has only just made it to EGM is unclear. If it's the case that FFXIII has just gotten on PS3 hardware recently, the prospect of seeing it inside 2008 seem slimmer than ever, especially in english.
Also, on the last page of the November EGM issue (see scan 2) it's revealed that FFXIII is on the top of the list for previews to be featured in next months issue. Look for scans of that very preview a month from today on FF-XIII.net.
Scans on FF-XIII.net