Commodore has set up a microsite to help steer you towards its unique vision of a modern operating system. If you head over to commodore.net/closewindows, you will first see a banner image of the Commodore 64X PC with OS Vision. But that is essentially an x86 PC in a C64-style ‘bread bin’ chassis, so don’t worry about the hardware.
It’s really annoying cause PowerPC64LE machines while being the only ones still supported by major Linux distros are pretty hard to find. There are ones from RaptorCS but they cost 3000€ for the entry-level ones.