
Speaking to the gaming websites gather who were at the GTAIV preview event, Rockstar has confirmed that that the PS3 version of GTAIV is a week to two weeks behind the XBOX360's version.
The demo which was shown is from the Xbox 360 version of the game. The PlayStation 3 version is still "a week or two behind," according to Rockstar. The build shown is 5 weeks old, and the framerate has improved considerably since the last demo.