Though he didn't named the platforms the game will launch upon, speculations are high for Gran Turismo 5 launching on PC. Gran Turismo 5 PC is what Sony is all aiming at after PS3 because of the boom in PC games industry.
John Koller said that they want to see GT5 on as many platforms as possible and if possible on all platforms. So certainly Gran Turismo 5 PC release can't be denied as of now. However he doesn't mentioned anything about making formal announcement of the game for multiple platforms including Gran Turismo 5 for PC.
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