I'm trying to determine from the initial reviews if I feel like the R5mkII was a bigger than usual upgrade between versions, or just about the same. On the AF side I feel like the added tracking capability is a bigger jump than we got with say the R3 and R6mkII. Stacked sensor is a big deal, but really only kicks in in ES mode for sports and action where rolling shutter can pop up (so a big deal for some, and no deal at all for others).
Either way seems like a lot of quality of life upgrades. I wonder how much might show up in an R6mkIII?
I'm test driving an R3 for a weekend soccer tournament. A good test of how much I'll benefit from the stacked sensor, and how much I will or won't miss the resolution over the R5. Then I can decide on an upgrade path.
Brian