Gran Turismo 6 is a leap from Gran Turismo 5 because the development team has reworked the core of the game, which includes introducing a new physics engine, according to Polyphony Digital president, Kazumori Yamauchi.
Speaking to Polygon, Yamauchi said that the overhaul ensures that Gran Turismo is "ready for the future," and the changes include a new and improved physics engine and graphics, new courses and cars as well as a user inferface that operates seamlessly without the need to load between screens.
"The new racing screens transition seamlessly," he said. "Before, there used to be a lot of loading time going from one menu to another in Gran Turismo 5, but in Gran Turismo 6, everything is seamless. It's much faster."
Yamauchi also said players will notice the new physics engine as soon as they get behind the steering wheel.
"The steering is going to feel very different — the experience is a lot richer, and I think when a player breaks into a corner when turning, when they switch to giving it more throttle, they will definitely notice a difference in the movement in the car. The feel they will get when they hit a car on the side of the road will also feel different — the car will bounce. It will all be very different from before."
Gran Turismo 6 is coming to PlayStation 3 in Q4 of 2013.