Recent Samsung flagship smartphones stand to benefit from One UI 3.1.1, albeit not with a revision change of their OS. Instead, Samsung will bring features from the new update to the Galaxy S20, Galaxy S21 and Galaxy Note 20 series, among others, via another One UI 3.1 update.
https://www.notebookcheck.net/Samsung-to-deliver-One-UI-3-1-1-features-to-the-Galaxy-S20-Galaxy-S21-and-Galaxy-Note-20-series-as-another-One-UI-3-1-update.556215.0.html