The release of Horizon: Forbidden West is imminent and little by little more and more details are coming out. For example, we now know how much space the game will take up on your PS5.
According to Twitter account PlayStation Game Size you will need 95,350 GB to run the game. This is the European version by the way. Good to know if you still need to free up some space for the game. The space required for the PS4 version is not yet known.