I just bought a 2021 PacHy Pinnacle on 11/24 and only have one profile. Software Version R16.27. Given that this vehicle was built post R17.89 OTA update, it seems crazy that I don't have the latest version, but it appears that I'm not alone. The Uconnect software update page also says that I'm up to date.
And not sure if it's related to the old software version, but when driving home from visiting family yesterday my Sirius XM's ability to search stopped working (no internet signal) but my XM presets still worked. Very strange and still without an internet signal. I believe for the first few days when I had the car the top of my Uconnect screen had wi-fi arcs between the bell icon and the temperature, but now its just a blank space.
I'm going to give Uconnect support a call and then talk to my dealership, but if anyone in a similar situation has figured this one out, please let me know.