The Register warns buying a 4K TV may not be a good idea because there's no guarantee that your screen will decode 4K correctly. You can read the artice over here.
So, are we going to face the same confusion all over again when it comes to 4K TV sets? Will early adopters find that the labels and logos make things more confusing, not less? Are there even going to be any transmissions in 4K, or does a bright new future of internet delivery mean we don’t need to worry about things like compatible tuners any more?
It’s worth noting that even the term 4K isn’t necessarily as well defined as you might think. The Digital Cinema Initiative also has a ‘4K’ standard, set at a resolution of 4096 x 2160 pixels and a 24 frames per second frame-rate. Of course, cinema isn’t quite the same shape as a 16:9 TV image. So when it comes to TV, 4K keeps the square pixels and aspect ratio of current HD standards, and so has a resolution of 3840 x 2160. It’s sometimes referred to as 4K2K, 4KTV or - increasingly by TV manufacturers - as Ultra HD. And down the line, there’s 8K, or Super Hi-Vision, too.