R5, R6, 1DX Mark III Firmware Update, December 2
Posted: Tue Nov 16, 2021 1:58 pm
According to this blog, there are several AF enhancements and other changes: https://www.photographyblog.com/news/new_firmware_for_canon_eos_r5_eos_r6_and_eos_1d_x_mark_iii_adds_vehicle_af?utm_source=dlvr.it