The RF 70-200mm f4L IS USM lens, featured in the January-March 2021 issue of EOS magazine, was expected to be available mid-December 2020. However, "Due to production reasons, we cannot prepare a sufficient supply amount for the release," says Canon Japan. "Therefore we have decided to postpone the release until early March 2021."
Canon released a number of firmware updates in March 2024, as follows: EOS R3 – version 1.7.1 1. Enables servo zooming to be remotely controlled from EOS Utility or Camera Connect when Power Zoom Adapter PZ-E2/PZ-E2B is attached to a compatible lens. 2. Enables up to 2 TB to be used on CFexpress cards larger than 2 TB. 3. Fixes an issue that may cause the camera, in rare instances, to stop functioning when using GPS. 4. Fixes an issue that may display Error Code 70 when performing anti-flicker shooting at a shutter speed of 1 second or higher. 5. Enhances security for FTPS (File Transfer Protocol Security) connections. 6. Fixes an issue in which Mobile File Transfer may not function when connecting the camera to an iPhone compatible with USB 3.0 and higher. 7. Fixes an issue that, under specific circumstances, may prevent the image from being displayed in the viewfinder or on the screen causing the camera to stop operating, or Error Code 70 may be displayed. 8. Fixes minor issues. EOS