I bought is last week. IMO the build seems kinda buggy (I didn\'t read this thread so I don\'t know if its been mentioned already). During replays, particularily on Citta D Aria, there is some noticeable slowdown, of which I have never encounted in any other GT game.
There is also no 60 htz mode, which makes me downright pissed. During the car win sequence there are big black bars and the compositing between the background and the car doesn\'t look right.
Also, graphics don\'t seem to be improved over GT3. Maybe alittle touch here and there but nothing that stands out over GT3.
I LOVE the new physics engine though. Trying to keep the car undercontrol on the Grand Canyon track is awesome, and you can actually totally spin out, something I found had to do in GT3.
Its an old build so hopefully its all fixed (no doubt it will be) by GT4.