Posted just now on the official Discord:
1. Will the PS5 version have all previous patches?
Yes, all previous patches are included.
2. Will the PS5 version come with all Season Pass content or will it be available separately?
The Season Pass content will be available separately.
3. What if I own both Season Passes on PS4 and upgrade?
Then you'll get both Season Passes for free on PS5 after your upgrade.
4. What happens to my progression if I upgrade from PS4 to PS5?
We don’t have a solution for this right now but we are actively looking into options for this.
5. Will I be able to earn new/old achievements?
Yes, you will be able to earn the same achievements like on PS4.
6. Will I be able to play with my friends on PS4?
Yes this is possible, however the 24 player servers are exclusive to PS5.
7. Why do I have to pay for the upgrade?
Because the PS5 version isn't just an "60 FPS" patch for the old game, it contains new data, new textures, new effects etc and also has full support for the PS5 DualSense controller.
8. What about the Xbox Serie S|X version?
A similar Xbox Series S|X native version will launch later this year, also charged if you want to upgrade.
9. When do PC get these upgrades as well otherwise they are covering what we are seeing as well.
The PC version will be upgraded later in 2021.
Fuck this exclusivity thing.