http://www.gtplanet.net/gt7-could-release-next-year-ps4/
"Although GT6 isn’t going on store shelves for another two weeks, that didn’t stop the BBC’s Top Gear from asking him about Gran Turismo 7:
'We don’t want to take too long on Gran Turismo 7,” Kazunori told us. “Best-case scenario? Next year. In GT6 we really had to tune the software 100 per cent to maximise the PS3′s architecture, but of course the PS4′s hardware is much better, so I think the overall quality of the game across the board will be boosted when you come to play it.'"
"Although GT6 isn’t going on store shelves for another two weeks, that didn’t stop the BBC’s Top Gear from asking him about Gran Turismo 7:
'We don’t want to take too long on Gran Turismo 7,” Kazunori told us. “Best-case scenario? Next year. In GT6 we really had to tune the software 100 per cent to maximise the PS3′s architecture, but of course the PS4′s hardware is much better, so I think the overall quality of the game across the board will be boosted when you come to play it.'"