I'd still love it if Yamaha would provide a Dolby Vision firmware upgrade to the RXA1050/2050/3050. Mine is only 6 months old.
Ok, I did quite a bit of engineering analysis between the 1050 (no DV) and 1060 (which will get DV) in the HDMI/Digital board. The digital boards with all the HDMI logic are slightly different, but are about 99% identical. All of the HDMI chips (Switcher, Repeater, FPGA are identical, and so is the wiring between them. The most significant difference is the DSP chip in the 1060 gets an extra 64M memory chip, which I don't think relates to HDMI or DV. It does mean the firmware is slightly different between the 1050 and 1060 in that area.
I expect with a considerable amount of work, it may be possible to make the future 1060 firmware load into the 1050, but I suspect that it may never actually work due to hardware changes in other areas. It would be quite a task.
My take is the 1050 series firmware could technically upgraded by Yamaha to pass through DV. The hardware is not a limiting factor. It is only a marketing choice that Yamaha will not update it.
To be fair, it's not unreasonable for Yamaha to stop upgrades with older models, and the fact they are even doing upgrades to the 2016 and 2017 models is admiral. It is still a fine receiver.