GTPlanet says PD is involved in PS4 & Vita Hardware Development.
4gamer: A driving game called “Driveclub” has been announced as [a coming up] PS4 software. However, in Japan there’s Polyphony Digital and I think many people are looking forward to an announcement regarding *that* racing game. What [can you tell us] about this?
Yoshida: Key members of Polyphony Digital are involved in the very development of the PS4 and the PS Vita. I am thinking of asking them what’s going on with Gran Turismo, but related matters will be probably made clear by its representative Kazunori Yamauchi in due time.
http://www.gtplanet.net/polyphony-digital-involved-in-ps4-vita-hardware-development/
GT6 cross between PS4 and Vita? Cool.