In an interview on the PlayStation Blog, Sony Computer Entertainment Europe CEO Jim Ryan explained why the latest Gran Turismo isn’t debuting on the PS4.
You had GT1 and GT2 on PS one, GT3 and GT4 on PS2, then there’s GT5 on PS3 and a space next to it. The difference between Gran Turismo and GT2 is unbelievable, but they’re both on the same platform. The difference between GT3 and GT4 is huge. We’re absolutely confident when GT6 comes, you’ll see a big step change up from GT5 too. There’s still a lot of potential on PS3 that a developer like Polyphony can really exploit.
And the other factor is that on PS3 we have an install base of 70 million units. On PS4 on launch day we’ll have an install base of zero units. There’ll be plenty of games to help drive PS4 – not least Driveclub in the racing genre from Evolution Studios, a studio with a fantastic pedigree.