New picture from Oedo
Y 20 Air refueling type look like CGI but the shadow look authentic with drogue chute housing look clearer
Y-20空中給油型
I'm 99% sure that is an Il-78.
1: there is no circular antennae cover on the spine of the aircraft compared to most Y-20s
2: more importantly, in the shadow of the tail we can see that there is a significant forward protrusion at the top of the tail that we see on Il-76/78 series aircraft but not on Y-20
Overall, the colour scehem is also identical to Il-78s that the PLA has in service, and the fuselage overall looks narrower than Y-20, with wing differences as well.
Also, the photo of the Y-20 with wingtip refuelling pods that has made the rounds in the last day or so shows the aircraft was still in primer. It's possible that the picture may be old, or that there may be more than two Y-20s with wingtip refuelling pods, but given the above points, I suspect this picture is most likely just an Il-78
edit: the position of the wingtip pods is also very different to the confirmed Y-20 with wingtip pods on the last page