We do not know the actual answer to this question. That said, I do believe that it will be exclusive to PlayStation. As you read above, I think the platforms will be PS4 and PS5. Shin Megami Tensei V was exclusive to Switch, despite having Nocturne come out everywhere in the same year. I think we will see a similar situation this year. Ultimax and likely Persona 4 Golden will come everywhere in 2022. However, Persona 6 will follow and only be for PS4 and PS5. However, it may come to PC in the future but not likely immediately at launch.