I love OS, but if you guys want to know what's going on with GT5, go to GT Planet...
http://www.gtplanet.net/
If something is known about GT5, you will easily find it there. No reason to speculate here. Just read through all the news stories since E3 and you will know all there is to know right now about the game. Though even here, there's a lot of unanswered stuff. The devs just aren't giving it up. That being said, the game is still over 3 months away and we have a lot of info at this point in time compared to most other games that are still that far away.