Canon could also use an inferior IBIS program when compared to the featuring during the EOS R6. I'm positive video modes will even be extremely nerfed compared to the EOS R6. There can be a slower max shutter speed (1/4000s as opposed to 1/8000s), and burst modes is also slowed. https://eosr42963.blogmazing.com/20131866/detailed-notes-on-canon-mirrorless