Question about Samsung GQ65S95BAT

Yes, that's right, Samsung TVs will never be able to support Dolby Vision, because the company doesn't want to pay the costs for the Dolby Vision licence, which is a huge disadvantage, because Disney+, Netflix and later also Paramount all support Dolby Vision. There will never be an update for Samsung TVs, because Samsung is of the opinion that Dolby Vision is not better than their own HDR10+ standard (of course, this is also not true, but Samsung remains adamant, there will never be Dolby Vision support at this company). Other companies take a more relaxed view, e.g. Apple TV and Nvidia Shield as well as Google ChromeCast with Google TV also support HDR10+, as do the AV receiver manufacturers. On principle, I would therefore only buy an OLED from LG, Philips or Sony. They are flexible and can handle more formats.