I just got my new andruod 12 with one UI 4 downloading its the stable version not the beta version I'm on samsung galaxy s21 plus 5g 128gb on ee in the uk
The beta program is over the OTA update is now being done I have the s21 plus 5g and have received mine on the 15th of November my mom has the same model you will get your update shortly I expect but the beta program is over now