They are very clear that they're releasing a PC version, but it won't be as soon as the exclusivity contract expires (in December).

While we might hope the PC version will release on December 31, 2023 as soon as PS5 exclusivity expires, producer Naoki Yoshida knocked that dream out of the air. "It is true that FINAL FANTASY XVI is a six-month limited time exclusive on the PS5 platform. However, it is a completely different story that the PC version will be released in half a year. I will make it clear, but the PC version will not come out in half a year," said Yoshida, via machine translation, on PlayStation's Japanese blog.

That's fine though, I can wait. I've got plenty of excellent games on PC, and we're also getting everything from Microsoft and Nintendo (lol) for the rest of the year.