Sony will not charge you to upgrade Horizon Forbidden West. Jim Ryan, the Interactive Entertainment chief at Sony, announced that Forbidden-West PS4 players will be able to upgrade to the PS5 version free of charge as promised by Sony last September. Ryan stated that the tech giant "missed it" and would stand by its original promise.
After Guerilla and Sony told customers that they would only be able to play the game they purchased, the company changed their minds. To take full advantage of PS5 features, you would need to purchase another copy if you started on PS4.
You won't get a similar offer for any other PS4-toPS5 upgrades. Ryan stated that any first-party cross-generational exclusives would be "moving forward" and include a $10 upgrade for the PS5 edition. You will still need to purchase the PS4's next God of War, but you won't be required to pay as much for the PS5 version.
Third-party studios won't be affected by this pricing, as some have offered PS5 updates for free (e.g. Star Wars Jedi: Fallen Order). However, it does set expectations. Sony wants gamers to pay for the PS5 update costs. Releases like Forbidden West are an exception to this rule.