The R5, as far as I can tell, has HDMI 2.0 which supports 8k30 4:2:0 (as well as 4k120 4:2:0). While the manual says it's not supported, the HDMI hardware can. Assuming the rest of the hardware can actually support 8k over HDMI, I imagine there will be a firmware update to officially support this.
Yep correct. When the r5 came out last year there was speculation and my research concluded the same as you. 2.1 as was stated was too new in comparison to when most of the hardware for the r5 was concluded.
Given that Canon are doing it, then I’m confident the v+ will support it after the firmware update To the r5. Whether there’s more than just rerouting over hdmi (output at 4:2:0), it still should keep a lot of people happy.
I’d be very interested in knowing what chip is inside that justifies the near 3x increase over the v, and how much more the v+ will be able to handle.
Still, glad Canon has worked with them - albeit late to the party in comparison to Nikon, Sony, Panasonic but still, good that they’ve got a solution.