According to the official PlayStation Blog, everyone who pre-orders the game in North America will receive four new vehicles including the 2011 BMW Z4 GT3, 2013 Nissan GT-R NISMO, 2013 Tesla Model S Signature Performance and the 2014 Chevrolet Corvette Stingray (C7).
Players who pre-order the game from Amazon will receive $1 million of in-game credit out of the starting grid in addition to the four extra vehicles.
GameStop pre-order customers will automatically be upgraded to the Gamestop-exclusive Gran Turismo 6 15th Anniversary Edition, which includes 16 additional vehicles, customized race chips, a race suit, a helmet, an avatar for PlayStation Network and a copy of the Beyond the Apex II app.
Developer Polyphony Digital is incorporating new car physics, tire and suspension modeling while also making adjustments to aerodynamics for Gran Turismo 6. Visual improvements such as adaptive tessellation and HDR engine rendering are promised to more accurately depict car cockpits and lighting.
Sony also announced a demo for Gran Turismo 6 is expected to hit the PlayStation Store July 2, in conjunction with the 2013 GT Academy competition. The demo will consist of a series of beginner rounds and a qualifying event where players can attempt to post a qualifying time on the Silverstone Circuit. Players who post the fastest times will compete on a national level for real-life seat time in the GT Academy Driver Development program.
The demo will be available through Aug. 31 and is open to all Gran Turismo fans at no charge. Any player who registers and submits a qualifying time will receive free bonus content.
Gran Turismo 6 is slated to release during the 2013 holiday season. The game will ship with more than 1,200 cars and 33 locations. Sony is planning to release new tracks and cars as downloadable content.