Android 12

The Software Updates page is the best place to watch. It hasn't been updated since Dec 31st so as of that date there was no indication of a future update yet.

There is an article on Mobile Syrup from 2 days ago that seems to indicate that it may be available in Canada, at least on an unlocked Z Fold 3 that was on Koodo, so it may be soon for the rest. Samsung has pulled many updates before due to problems. The Fold 3 included. None of the carriers have the updates listed on their sites yet.