PD considers GTSport to be GT7 internally (Kaz even said publicly maybe he should have named it GT7 Sport), but that just means the next GT they're making will be GT8 to them. He just wanted to clarify GTSport is a full GT game and not some spinoff or prologue. Kaz pretty much confirmed the next GT is a separate game, and has even referred to GT7 as a separate title with a design philosophy that isn't tied to GTSport's limitations (no modification upgrades, no customization parts, etc.) Economically and business-wise it doesn't make sense to continue developing GTSport and evolve it into GT7 with free upgrades, they need a new product to sell and keep the company afloat.
"GT 6" has many customized items, is there any plan to add the same elements in the future "GT SPORT"?
Mr. Yamauchi: The customization factor of "GT SPORT" is different from the numbered game "GT 6", or "GT 7" which may come in the future. I think the customization factor will probably be the next game that will be all of what you want.