This report from the BBC about 4K TV explains the situation wonderfully, It’s not only informative and accessible -- but also at time incredibly funny in its very-intentional cynicism. What's also clear is that the reporter doesn’t know about this Ultra-D technology, so it’s not mentioned as an option for addressing the problem, but it’s a wonderfully fun piece regardless.
Unfortunately, I don't see a way to embed the video, but you can just go here to the BBC website and click on it.
By the way, over the weekend, I spoke with Mathu Rajan, president of Stream TV Networks, and he gave me a bunch of the-the-record updates. Alas, I can't go into it yet, but suffice it to say that they're still on track for the consumer release of their product, which is licensed by several TV manufacturers, and sets should be available by December. His biggest news though concerned some content deals they were signing, and when it is made public, it has the potential to be game-changing. Until anything is official, I always remain wary, since any number things can change. But just know that it's all moving seriously in the right direction.