There is no other model "further up in the range" for the R5.
You conveniently edited my post to suit your argument. I repeat it below, with the text that you omitted:
"I wasn’t suggesting that Canon were about to produce a R5 Mkii - I was suggesting that if someone wants a camera with more features or a higher specification, they’d want them to buy a model further up in the range,
or to wait until the next iteration is released, rather than add those features to an existing model".
I think Canon would disagree with your assessment that there is no model further up the range. The R3 although it has a lower MP count (but enough for most users) has a much better specification overall, and is certainly further up the range.
The R5 meanwhile has many features “missing” that Canon could very easily address with a firmware update, but have so far chosen not do do so. These include among others:
Ability to set lower burst rates than 20fps in electronic shutter.
Ability to bracket exposures with electronic shutter.
Ability to assign a fake shutter sound with electronic shutter.
Reduction in startup lag time.
I’ll lay money that Canon never addresses these with a firmware update…
Come on Canon, prove me wrong and I’ll buy you all a beer.