I don't like to question
@Canon Rumors Guy when it comes to camera release rumors, but I have a hard time imagining an R1 for the summer (or possibly fall 2021) Olympics. Canon announced the 1Dx in Oct. and released it in March. They announced the 1DxII in Feb and the 1Dx III was released last February. My point is that the clock is ticking on announcing a radical new 1 series body.
We've seen no announcement. pre-announcement, teasers or leaks. Olympic level photographers need time to become familiar with the cameras (and that's for DSLRs where the basic controls and body types were familiar). Given that there are basically no major sporting events happening and it is already January, I don't see many Olympic photographers taking a chance on a completely new body style. I can't imagine anyone relying on it for the Olympics without having the opportunity to put it through the paces at other events. There is too much at risk. And, honestly, right now, what other events are there even being held for photographers to cover?
I suppose Canon could release it around the time of the Olympics and give bodies to a bunch of photographers to try out, but I doubt many would actually be using it for Olympic events.
Additionally, it seems strange that Canon would delay an R5s in favor of the R1.The R5s, if it follows the 5Ds model, will be basically an R5 with a different sensor -- a model that presumably wouldn't require extensive retooling and could share much of the same assembly processes. The only explanation I can think of is that they are so far behind on R5 deliveries that they don't want to tie up the assembly lines with another version the R5.