My guess is that all along Canon had this better firmware. Even before they sold the RP and R models. The strategy was probably to MILK the customer by introducing the "improvements" in future new camera bodies RP Mk2 and RMk2 after a certain period of time. The aim is to maximise profits. However the dismal sales statistics of the RP and R models has shocked Canon management. Coupled with surge in features advancement by other competing brands that make Canon look technologically inferior. In the past Canon and Nikon were an oligopoly being the top 2 manufacturers and both adopted a practice of milking the customer. By selling a "new" camera in each model series every few years but with only slight improvements. The emergence of Sony mirrorless disrupted this milking practice by Canon and Nikon. Especially by reducing the new product cycle time. Sony introduces new models fast and with vast improvements, not just trivial little refinements.