According to a Sammobile report, the latest software update for Galaxy Note 20 and Galaxy Note 20 Ultra is currently rolling out in the US. It comes with the firmware version N98xU1UES2DUK2 and is available on most of the US carriers including AT&T, Verizon, Xfinity Mobile, and more. Currently, we don’t have the complete changelog, but it is unlikely to bring any major changes like new features or UI tweaks. Samsung Galaxy S20 is reportedly receiving the December 2021 security patch on both variants (LTE and 5G). The LTE variants of Galaxy S20 and Galaxy S20+ are reportedly receiving the newest security update in France with the firmware version G98xFXXSCDUK1. The 5G variants of the Galaxy S20 trio are also receiving the new update in France. It can be identified by the firmware version G98xBXXSCDUK1.
Unlocked variants of Galaxy S20, Galaxy S20+, and Galaxy S20 Ultra are receiving the new update on AT&T, Comcast, C-Spire, Bluegrass Cellular, and Verizon networks in the United States. The update might take a couple of days to reach all the units. Meanwhile, users can manually check for the new update by navigating to Settings » Software updates. [source 1, 2]