I just want to chime in on this 4K discussion lol:
4K is a dumb marketing term that changes the naming scheme for silly "consumer-friendly-but-not-really" reasons. It is 3840 x 2160 at 16:9 - so it should just be called 2160p.
For anyone with decent vision or prescription, the resolution increase is
absolutely noticeable, but that doesn't really matter because "most" people won't be able to notice the difference unless their screen is >50" or they have them side by side. Larger screens are the trend and will continue to be as things like weight and cost decreases. You will always have some people who will just buy whatever new thing the salesman sells them, though, but they aren't the norm.
That said, the idea that it won't "catch on" is absolutely silly. It is not a "gimmick" and it isn't comparable to 3D adoption - that is a new type of viewing experience altogether. 3D is (and always has been) too "ahead" of its time, as you still need to put on glasses, powered or not - that is just unacceptable from an average consumer standpoint. And (if not talking about CG or post), it effectively requires content that is filmed with a completely different kind of camera technology (not to mention different framing, set design, etc), not just a resolution or sensor density/size increase like with 4K. But this will eventually change with tech improvements, too.
And even then, I almost guarantee that 3D will eventually catch on for things like gaming and digital content as well once auto-stereoscopic technology (nintendo 3DS-like, no glasses) improves to a point where it can be added in at a more amicable cost, and that is just a question of when, not if. At that point it's not even a matter of catching on - it's just par for the course improvements of technology:
You'll see improvements on things like parallax barriers of 3DS:
To cylindrical lenticular displays (
kinda like those cheesy movie covers that shift when you move and make the funny sound when you scratch them) like this which don't split resolution as much and allow for many viewing angles:
Philips even made displays like this up to 2160p with 46 "3D viewing angles" under WOWvx until 3 or 4 years ago when they spun the tech out to
a new company. Non-consumer, but again, it is only a matter of time until it this kind of tech distills down into the mainstream.
Though hard to show, here's a video of one from earlier this year.
Other than that, the best/cheapest solution might even come sooner, via use of "latency-free" gaze-tracking (future of Kinect-like devices) which allows for virtually infinite viewing angles and even view content with movement parallax, that is, looking "around" an object onscreen by changing your position - think of the implications of that for gaming! You'll probably even see things like curved displays, and holographic displays start becoming popular eventually, too, but probably not for watching content from a couch directed at a wall.
But I digress, 3D will happen eventually. Here's a good article from 2012 going way more in-depth than I'm capable of:
http://www.photonics.com/Article.aspx?AID=50765
So, display resolution and things like processor speeds, memory, storage, and other hardware specs, etc don't just stop improving because there isn't an obvious difference for the average consumer. It's just not how it works. 4K will become a standard because the tech will naturally come down in price, and then manufacturers will stop making 1080p displays eventually as it just won't be cost effective to do both (the same thing is happening in mobile right now, just as it happened with CRT through LCD). And then 6K, or 8K, or whatever higher resolution after that (or wider aspect ratios). And so on until you can't see pixels or resolution improvement even with your face up to the average display with a microscope, but that's a long ways off.
And when that becomes the limitation, the size will increase until it isn't practical to even have a display at all, and then I almost guarantee we will see something like laser projector technology start competing more (
LG Hecto). Where the ambient room lighting is largely irrelevant, and where a physical display isn't even required, just a proper "canvas" (not just a wall/whatever people use with lightbulb projectors today) with the projector sitting as a small device at the bottom like a bluray player - you will upgrade that box rather than the display.
Mark my words, and remember this post in like 5-20 years lol