Example, if the game is developed for, you can feel the rain drop or steps like I feel them on Astrobot PS5 ?

Or it's just like the ones on Xbox Controller with old rumble tech ?

Edit : I got the answer in this video at 18:19. And yeah, it's the same "technology" as the DualSense. So technically, developers can therefore create the same immersive vibrations as on PS5 if they wish. This is a positive point for the future of PC games on Steam. It's one of my favorite features on the Dualsense on PS5.