Why mention it when at launch of Q the broadcast standard for HDR wasn't finalised.
At the moment if you want HDR and your TV supports it you've a choice of either Netflix or Amazon and even then only certain titles.
Sky have been playing around with HDR for a while so I'd be amazed if we didn't see it arrive at some stage.
http://www.broadbandtvnews.com/2015/...dynamic-range/