Yes it does. Go back and look at threads before

TV3 and you can see nearly duplicate arguments being made for 720p being "good enough" and 1080p being a gimmick, "human eye can't see at normal distances", "until iTunes is full of 1080p", "until bandwidth everywhere is improved", "the chart", file sizes, and on and on. So much of the same. It seems the rule is "whatever Apple endorses is the ideal until Apple shifts and then the new is the ideal."
A 4K

TV should be able to downscale 4K content to exceptional 1080p or 720p for people with those kinds of sets. However, 1080p or 720p iTunes files upscaled to 4K is far from the same.
There are relatively cheap 4K camcorders out now and more coming. Our new Macs have the horsepower to process such footage. The new iMac marketing even brags about being able to display & edit 4K (what's the point if our human eyes can't see it)?
Even if there was no content available (forget select Netflix, Amazon and camcorders), those high resolution photos we take with those beyond-HD cameras built into our iDevices will simply have that much more detail pushed through a 4K

TV to a 4K TV.
I don't know how we can rationalize retina on 4" screens while dismissing 4K screens on 50" as a gimmick? Is retina a gimmick? (rhetorical: I know, "that's different").