Horizon Forbidden West update 1.18 is out now for PS4 and PS5. You can get the complete patch notes here.
The patch has added a new facepaint to the game called “Mark of Pride”. Aside from this new addition, the other changes are mostly bug fixes to the game. Some of these resolve quest bugs and others have to deal with various gameplay-related issues. The complete list of the changes can be seen in the patch notes below, or you can have them on the official website.