One UI6 is in beta testing for S22 Series. A quick search on here would have found multiple posts about this.
If you have an unlocked device, bought direct from Samsung, you may be able to join the beta testing if you want to. Look in Samsung Members, go to banner at top and swipe left or right and see if there is a banner for beta.
Otherwise you'll have to wait until testing is finished.
Note - Google Wallet does NOT work in Beta.