The PS5 version is not out yet (maybe in 2021).. but many of PS5 owners are playing the PS4 (updated)... Thats over 100GB of data.

When they will release the PS5 version i worry about not being able to install the PS5 version if they decide to make a folder for the PS5 version

for those who have the physical PS4 version installed on their PS5. I suppose that if you want to play the PS5 version you will be prompted to insert your PS4 disc .
Does that mean you need to leave the PS4 version of the game permanently installed ? I seriously hope not.. because that will eat up wayyyyy too much space on this little tiny PS5 SSD.

When the PS5 version coming out. i really do not want two versions installed. Can anybody at projeck confirm it won't be?

I don't really know how it works from what I remember reading it sounds like it installs a digtal version of the PS5 version but requires the PS4 disc. But that was about game that already have an upgrade, my guess is it'll either download the PS5 version allowing us to delete the PS4 version or it'll convert the already installed PS4 version.