Atlus Japan has posted official FAQ for the Persona 5 The Royal remaster.
https://p-ch.jp/news/8295/
Here they have confirmed you cannot upgrade the PS4 version of Persona 5 Royal to the PS5 version.
Not sure if this was previously confirmed, but I haven't seen it before.
https://p-ch.jp/news/8295/
Here they have confirmed you cannot upgrade the PS4 version of Persona 5 Royal to the PS5 version.
![3Kcf2Qs.png](https://i.imgur.com/3Kcf2Qs.png)
Not sure if this was previously confirmed, but I haven't seen it before.