https://wccftech.com/android-12-now-rolling-out-to-galaxy-s20-galaxy-note-20-and-galaxy-z-fold-2/

Samsung has decided to bring some serious software competition to the other phone manufacturers as the company has decided to roll out the Android 12-based One UI 4.0 stable update to all the devices from last year. This means that your Galaxy Z Fold 2, Galaxy Note 20, and Galaxy S20 family should be receiving the update any moment now.

The initial roll-out had started last night but only a few minutes ago, it had started on a wider level, as well. For those wondering, all the devices in their respective series are getting the update.