Thank you for using links on this site to buy—and FYI if you sign up for availability notifications by B&H, this doesn’t give credit to this site. Get Canon EOS R at B&H Photo.
See also Canon EOS R5 Improvements List — Part 1.
Focus Bracketing enables new possibilities for photographers looking to increase their photo's Depth-of-Field. This operation automates the process of taking multiple images with the goal of combining the area of sharp focus of numerous depths within the scene into one image via the Digital Photo Professional application in post-production.
Of course, you need not use marginal software like Digital Photo Professional; I use Zerene Stacker.
Disappointing for still photography is the inclusion of an anti-aliasing filter aka low-pass filter. See Blur Caused by Anti-Aliasing Filter in Making Sharp Images. I’m not certain, but it might be that pixel shift and multi-shot high-res mode are precluded by the inclusion of a low-pass filter—a lousy tradeoff IMO, but I’m not a video shooter.