The Galaxy Z Flip has firmware version F700WVLU4FULA, which is now available on Rogers, Bell Mobile, Telus, and Videotron networks, whereas the Galaxy Z Flip 5G has firmware version F707WVLU2EUL9, which is available on practically all networks.
Both releases come with the December 2021 Android security patch, which is a shame given some Samsung smartphones started receiving the February 2022 security patch last month.
In the United States, Samsung is also seeding the One UI 4 upgrade to unlocked Galaxy S20, Galaxy S20+, and Galaxy S20 Ultra devices. It comes with firmware version G98xU1UEU2EVA2, which updates the S20 trio’s Android security patch level to January 2022.
If you haven’t received the update yet, you may manually check for it by going to Settings > Software Update on your device.