Some people here seems to think that Sony would be dumb enough to announce current gen and next gen version of a game at the same time.... This would immensely hurt current gen sales especially for a game that is ALL physics and ALL graphics.... I have no doubt that an upgraded version of this game is coming (all the DLC and new tracks included with a facelift) to the PS4 but only after current gen game had its initial sales kick.
Same thing with GTA5