I just watched some of the first movie and I don’t like it. Not much else to say, it was the standard HD version not 4K but it looks way too cold (despite possibly more detailed than I’ve seen before).
The HDR is the best I’ve seen Star Wars look (at home). Worth upgrading (if necessary) in my opinion. I’d say that about most movies though. The HDR is a much more significant improvement than the increase to 4K resolution.