Here is the official GT5 information from the Tokyo Games Show:

GT5 = March 2010 for Japan.

Over 950 cars.

70 tracks and over 20 locations.

Arcade Mode: Single Player, Split-screen two player mode.

GT Mode: World Map, My Garage, Car Dealer, Tuning Shop, Championship Race, and License Test.

New physics, damage, movable objects on the track, and the newest hybrid and electric cars.

Photo Mode: 'Photo Drive', 'Photo Stage'.

GT TV: Improved UI, export of videos to PSP, and progressive downloading.

YouTube export.

Text Voice chat.

The Merecedes-Benz SLS will be in the game.

Animated pit crews.

Im a bit dissapointed with the release date but if the games perfect it doesnt bother me much.

What do you think?