"ding, ding, ding, ding!!!!" Ok, so I'm chiming in late (as usual)
The future of this game is jeopardized only by its creator's inability to recognize the need to keep in touch with his CUSTOMERS! (what a Maroon)
He JUST doesn't :fucking LISTEN!! If he had, and taken our suggestions into account, this title would still be
thriving today. I don't expect the next iteration of this game to be released until AFTER THE RELEASE OF THE PS4. By then, I won't care.
And, even then, it will mostly only be a derivative of GT5, not having any "ground breaking" changes. The next step for this title is to get Multiple screens working with ONE PS Platform and the extensive use of 3D.
Albeit, we do REALLY NEED MORE TRACKS, the more important factor is getting the developers to listen to their customers suggestions - this has been a problem Since Gran Turismo was released on day one.