The latest Samsung phones to get the Android 11-based update are the Galaxy A12 and Galaxy A02s. The A12 gets One UI 3.1 (Core) in Russia with firmware version A125FXXU1BUE3 alongside the May security patch.
The A02s is also getting the Core build of One UI 3.1 via its A025FXXU2BUDC update which was spotted in Russia. Strangely this update comes with last month’s April security patch instead of the newer May build.
Both updates bring the usual Android 11 goodies which include one-time permissions, improved smart lock controls, improved Digital Wellbeing, chat bubbles and much more.