I've given up trying to figure out their numbering scheme. I'm on 4.18.10, you're on 4.18.11...which nobody with 18.10 is getting...none of the 4.22 builds are going out to anyone with either of those builds and 4.18.12 is the FSD beta. It's a riddle wrapped in a mystery, inside an enigma.
It depends on your car’s configuration to some extent. Our 2018 Model 3 with FSD and HW3 has 4.18.11, but our 2018 S with FSD/HW3 has 4.18.2.