I don't think that I saw it posted previously, but there are firmware updates for the EOS R and RF lenses. The lens updates add compatibility for the EOS R5 and R6 cameras for the lens IS to work with IBIS. The 1.7.0 firmware for the R adds the following items.
Support has been added for the following lenses:
Canon RF 600mm f/11 IS STM
Canon RF 800mm f/11 IS STM
Canon EXTENDER RF 1.4×
Canon EXTENDER RF 2×
The operation of playing back through the multi-function bar has been improved *
* please refer to the latest version of the camera’s Instruction Manual that is released with the firmware update.
Support for the Battery Pack LP-E6NH has been added.
Nice to see it includes yet more and more of the upgrades and feature enhancements they promised at launch.













