Many GT fans are upset that Gran Turismo 6 is debuting on PS3--after the launch of PS4, in fact. However, developer Polyphony Digital are working on a PS4 version as well--and it could be ready as soon as "a year or two" from now.
Speaking to Famitsu (via Polygon), series creator Kazunori Yamauchi said bluntly that "the PlayStation 4 game which we'll likely call GT7 will be done in about a year or two, I think, and I think the community aspect's going to be vital there as well." Of course, Polyphony Digital isn't known for being the most punctual of development teams.
And while PS4 is undoubtedly more powerful than PS3, Yamauchi says not to count out Sony's current-gen system. "PlayStation 4's large memory size is a unique trait," he said, "but in terms of CPU performance, the PS3's Cell chip, while difficult to handle, is really capable. They both have different advantages."