Official: Sony A7C II, A7CR and FE 16-35mm f/2.8 GM II
Vs the A7RV, we're giving up the 4d screen, viewfinder, 8k recording, better IS, 8fps vs 10 in the R5, 2 card slots, shutter (although I found a reviewer Art of Photograhy who says the bokeh issues do not appear with this solution, but he says it's kind of loud). It does seem like an engineering feat and the msrp is less... Eh... this is a close call.