4K blu ray
First of all if you look on the Sony support site, it says this tv supports hdr over all 4 HDMI inputs.
With Avengers infinity war coming out soon on disc I have been thinking about getting a 4K blu Ray player. I am looking at the Sony XBP 800. I am looking for and info from anyone using a 4K player and the results on this tv and the Sony player as well.
Also, about the hdr, everyone seems to have a different opinoin about whether or not it is supported. I would tend to believe the Sony support site.
I knew this was not a high end tv when I bought it. It has been great so far however. That is just my experience with it.