Then someone shows me that GT5 Prologue is coming out and here are some screenshots....
Evo 10...

New GTR, R8 etc

Checkout the number of cars on the track.....

A good video....the flybys look like they are from the game but the first bit where the background changes looks a bit like 'intro vid'. Be cool if you can have real dashboards though.
http://www.gran-turismo.com/jp/movie/d920.html
Another one......checkout the spoiler coming up on the Audi !!!!!
http://www.gran-turismo.com/jp/movie/d944.html
Now I know this is 'gt5 concept' and its likely to be a cut down version of GT5 which should be out in the next couple of years but it definitely gives you an impression of the ps3s capabilities.
My only concern is the ai....how poor has it been on the other Gran turismos...being smashed off the road because the other ai controlled cars didnt know yo were there is no fun....lets hope that is sorted as Forza is great.
So if Sony are willing to drop the extortionate price for it I would definitely be tempted after seeing these screenshots !!