The problem is that no one (except Vizio who ain't talkin') really knows what it will do. It is not spec'd for HDR or WCG, but some very knowledge folks in the other forum have tested it and shown that it provides much more than spec. I can tell that the UHD HDR image is much superior to the standard BR -- more variation in white/black/brilliance (HDR-like?) and much greater color variation (WCG - more or less?). I'm not claiming anything and, as I said, a new TV (65") purchase will be made within the next few months. So I'll accept what I have without worrying about the why. While the Samsung K8500 doesn't help at all with trying to understand what I see, the OPPO will be a completely different beast. (I said I won't "worry" about it -- that won't stop me from trying to get the best out of it that I can. )
Just to catch up, since I'm fortunate enough to be getting the OPPO, I am returning the Samsung K8500 that I just received. With the right K8500 settings including Movie Frame (24FPs) "Off" and HDMI Color Format "RGB (Enhanced)", along with the A3060 AVR set to Mode1 for HDMI-4K-Mode, plus using the HDMI5 (4K@60Hz) input and Picture Mode "Computer" on my Vizio M55-C2 and with "Certified High Speed" HDMI cables from Monoprice, I am getting a beautiful UHD "HDR-like" image with the UHD disc of Independence Day. So I know things work.On the downside, I have already seen some of the lip sync issues others have reports. Put the player in Pause for a bit, when restarted the audio and video are out of sync -- but not always... Just exit the movie to Menu and restart and things sync up again. (Kinda painful!) I'm not sure, but this may be related to some of the settings as I didn't see it after the above UHD setup. But I also have not had time to fully check it out. Before returning the Samsung (since I will have a wait for the OPPO), I will be doing a complete setup evaluation and will post the results and config info in my personal HT thread in another forum. If there are no objections, I'll provide a pointer here.