I have been searching the web and forums like this one for info on GT4, but so many conflicting rumours exist?
But I just picked up a copy of a UK PS2 mag ÒPLAYÓ which had the following infoÉ
This Quote is taken directly from issue 98 of ÒPLAYÓ a UK PS2 magazine
Gran Turismo 4
Sony Japan let slip some tantalising facts
ÒÉ.For starters all the major manufacturers are back and it seems they have consented to have their cars battered and bruised in the game as deformation and real time damage make an appearance for the first time in a gran turismo game.
Also on the cards are a selection of street racing circuits around Hong Kong as reports come in that members of Polyphony DigitalÕs GT4 team have been spotted mapping famous central areas of the islandÉÓ
Other information confirmed was the online play component of the game and downloading of cars over the net.
I hope this helps, I for one cant wait.

But I just picked up a copy of a UK PS2 mag ÒPLAYÓ which had the following infoÉ
This Quote is taken directly from issue 98 of ÒPLAYÓ a UK PS2 magazine
Gran Turismo 4
Sony Japan let slip some tantalising facts
ÒÉ.For starters all the major manufacturers are back and it seems they have consented to have their cars battered and bruised in the game as deformation and real time damage make an appearance for the first time in a gran turismo game.
Also on the cards are a selection of street racing circuits around Hong Kong as reports come in that members of Polyphony DigitalÕs GT4 team have been spotted mapping famous central areas of the islandÉÓ
Other information confirmed was the online play component of the game and downloading of cars over the net.
I hope this helps, I for one cant wait.
One of the best GT4 info sites out there