Sony is one of the gaming giants that's still stubbornly holding onto the idea of console exclusives , and Gran Turismo is one of the franchises that still sticks to Sony's living room gaming console. This isn't due to a lack of time or technical know-how, though, as is evidenced by a tidbit recently shared by industry insider, Jeff Grubb, on his podcast, Jeff Grubb's Game Mess . According to Grubb, Sony has an internal version of Gran Turismo 7 that runs on the Nintendo Switch 2, although it will seemingly never be released on Nintendo's newest handheld gaming console. This echoes previous rumors that there were other versions of Gran Turismo games with internal builds running on Windows and Linux as well as a version of Gran Turismo 6 with full VR support.

Speculation suggests that these internal, non-commercial builds of games like Gran Turismo are likely to be testing platforms for Sony's own future hardware endeavors, which the hardware and game development teams can use to gauge things like minimum required hardware specs, optimization, and even graphical fidelity options for smaller screens. The timing of this information lends credence to the existence of GT7 on the Switch 2, since Sony has allegedly been working on a full-fledged gaming portable console that is slated to launch alongside the PS6 somewhere between 2027 and 2029, depending on the state of the ongoing PC hardware shortage.