Samsung has recently released the December 2023 security patch update to the factory-unlocked versions of the Galaxy S23, Galaxy S23+, and Galaxy S23 Ultra.
Galaxy S23 One UI 6.1 testing spotted
The latest update was rolled out with the firmware version S91xU1UES2BWKA in the US and is available on all carrier networks, including AT&T, Bluegrass Cellular, Comcast, Cricket, DISH, T-Mobile, Verizon, and Xfinity Mobile.
Now, the One UI 6.1 software testing is spotted (via @TarunVats) for the Galaxy S23 models. One UI 6.1 internal beta build has been spotted on a server with the build number S918NKSU2ZWX2/ S918NOKR2ZWX2/S918NKSU2BWJA.