I don't think the thighs you have were an early version. @Teezle shared this pic of some Bobrovsky 12.2s back when the thread first started (around the time the name change was announced from 12.X to PX). If anything, these are likely the prototype of what became the PX line
Note Bob is now in a 12.2 branded line with the same thigh rise notch as PX, that is probably what we are going to see at retail next year for HZRDUS (Hx3?)