First thing I noticed when it comes to 4k movies is the frame rate. HDMI 1.4 only supports 15fps.. So one needs HDMI 3.0 on both ends. Even my pretty awesome telly doesent have it, I have to get a couple upgraded parts for it.
Since I'm both slow and maniacish that more than likly translates into a bigger (85"?) telly that allready has it one day in the too distant future. This will also give me bigger, more readable text where zoom is a hassle.
And my awesome new video card will have to be upgraded as it doesent have the new HDMI standard either.