Continuing in this vein, Sony published an extensive article in the official PlayStation blog
It’s the fact that you play like DiRT 5, Maneater The Yakuza: Like a Dragon have confirmed that we will not be able to continue the game of PS4 in its version of PS5 what is causing people to talk, PlayStation has just answered: depend on the developers. Each studio or publisher will have the power to decide whether or not they want the progress of their games to be transferred from PS4 to PS5, so that players will have to consult each case in a specific way to know if they will be able to keep their games or not in the jump to the new generation of consoles.
Transfer of items: total, partial or null
At the moment we know that many games, like Spider-Man: Miles Morales
On the side of those who have already confirmed that they will not have cross-save
For those who do have the ability to transfer games between generations, Sony explains on its blog that it can be done via LAN connection (With cable) or WiFi (Without cable). You can also use an external memory with USB connection to save the PS4 games there and transfer them to PS5 by connecting it to the console. Users subscribed to PS More they will be able to do this process more comfortably storing your games in the cloud.