Seldom has a camera elicited as much controversy as did Canon’s EOS R5 and its overheating debacle. At the time, we were even compelled to call out DPReview’s shameless defense of Canon, a shoddy piece of journalism which DPR technical editor Richard Butler has since retracted. Since the latest update, users are reporting being able to record over two hours of 8K without overheating.
22nd July 2022
Firmware Version 1.6.0 incorporates the following enhancements:
1. Adds [Auto Power Off Temp.: Standard/High] to the menu for movie recording. When [High] is selected, the camera will not automatically turn off when the temperature of the camera body and card become high, which may allow for longer movie recording than before, depending on the shooting conditions. Note that the temperature of the bottom surface of the camera may increase at this time.
2. Adds the ability to convert multiple HEIF images into multiple JPEG images.
3. Enhances the performance of “Movie Digital IS”. It stabilizes the image when taking selfies or walking shots using a wide-angle lens.
4. Fixes minor issues.
The Daejeon Chronicles 
You can only imagine how many people have missed capturing something unique because their R5 couldn’t shoot 8K or 4K HQ because the timer starts to count down when you power on and take pictures. And now the restriction that everyone knew was BS is lifted without a word. The same R5 that couldn’t shoot another 10min of 8K without having to ‘cool down’ for 2 hours.