Desde avforums en USA confirman que el modelo 9600 -UB reproduce HDR por HDMI, mientras que los -UA no:

Originally Posted by N3TKE
Just hooked up the new Sansung 8500 4K ultra HD player to the LG 65eg9600-ub 4K TV . Picture is unbelievable and is playing in HDR came up in the right corner
Cool. HDR on a -UB, just like we expected/hoped. Too bad mine's a -UA.

I never did believe what LG said about not supporting HDR on the later 9600's, but what else are they going to say. They know that it would just piss off -UA owners if they acknowledged that -UB owners were getting a free upgrade.