Everyone wait till March 12 2021, i am somewhat sure that we will receive update by then because M31s is reported to get updates quarterly which means in every 3 months and last time we received the update on November 11th 2020 so by the calculations...
I have seen a video on YouTube where a person have flashed Russian Update in his phone and there it shows that phone have NFC support and One UI core 3.1 Link of the Video :- https://youtu.be/C5ampbfscy0I wish Samsung Provides NFC and Goodlock in Ind...
It's not about the bad experience bro, many brands provide regular buggy updates in there UI and that is more problematic than not receiving the update, one buy's samsung only because of its premiumness and the thing about the update we already knew ...
The post i wrote on Members App. (which i think you are referring to) is based on pure probability and what I feel, it is not a official date but just some assumptions that i made based on past samsung behaviour with the enrollment of updates.