It's weird because nowhere on the package or manual says it does hdr and YouTube reviews say it doesn't, but when you go into the picture settings there is a option that says "HDR Notification" (on/off).
After connecting my PS4 pro I can confirm it doesn't do HDR. The video output menu on the PS4 pro doesn't show HDR enabled but when plugged into my other 4K HDR tv, it says HDR enabled.