Go to samsung members app scroll down to the bottom of the page there you will the window to register for one UI 9 beta program. Once registered go to settings and software update option and check for updates. Youll receive it

Go to settings and check for the software update. If you didnt get the update and then wait for the official release

So far its good. But it takes days to check the battery drain

Dynothavecatl font style

Not big. Wait for one ui8.5 for major design changes & improvements