My observation of the TeslaFi stats:
12.7 is only for pre-HW3 cars. 36.1 is only for HW2.5/3 cars (and only HW3 gets cone detection)
Almost looks like 32.12.7 leaves out Raven S/X and Model 3... which would be the exact group the one-pedal feature is for. So probably those will just go directly to 36.x whenever it's ready for wide release.