looks like *most* are on software version 2021.43.201, and per TeslaFi nobody on this version has moved to a newer version (yet). I've had one update since I took delivery on 2/7/22 to 2021.43.201, but have been on this ever since.
https://www.teslafi.com/firmware.php?detail=2021.43.201%2072924cfb