From Canon Japan (google translation):
Regarding the following products announced on July 9, 2020, if you order more than expected, it may take time to deliver the products.
[Applicable Products] EOS R5/EOS R6/Battery Grip BG-R10
We apologize for the inconvenience, and thank you for your understanding.
Canon Japan (google translation) about the EOS R5 firmware update:
- Full HD/120P recording size support
- Added low bitrate mode to RAW and IPB for all resolutions and frame rates
- Canon Log 3
via CanonWatch