I bet next R camera and 1dx3 are both 35mpix cameras so they can do 8k .
Doesnt sound logical they make highpixel R next ,for marginal highpixel camera user base .
They need good 35mpixel camere next for R
35 mpx (slightly better ISO/DR), dual card slot, IBIS, better eyeAF.
That would be enough for me to buy into RF system.