Meanwhile, Sony recently also confirmed that both God of War: Ragnarok (or whatever the game ends up being called) and Gran Turismo 7 will both be cross-gen as well.
Interestingly enough, according a recently published VGC article, God of War: Ragnarok was always intended as a cross-gen game, same as Horizon Forbidden West- both games began development as titles that would release for both PS4 and PS5.
Marvel’s Spider-Man: Miles Morales released for both consoles, while Horizon Forbidden West will be playable on PS4 as well.
Gran Turismo 7, on the other hand, is a different story- allegedly, the decision to make the racing sim a cross-gen release was made fairly recently.