I already posted a thread over in the flat panel forum but I thought I'd pop this here as well considering it sums up my feelings pretty succinctly on why I'm ambivalent to 4k tv if extra pixels is all you're offering me. This is a link to a document drafted by the European broadcasting union criticizing CE manufacturers for focusing only on pixel count and ignoring the other areas of picture quality (greater contrast, higher frame rates, expanded color spectrum etc).
At the time of publication (July 2014) the issues confronting broadcasters are:
Televisions advertised as “4K Ultra-HD” entered the market in 2013.
These displays provide four times (3840 x 2160 pixels) the resolution of HDTV. It is predicted2 that in excess of 12% of worldwide television sales will be ‘4K Ultra-HD’ TVs in 2015.
The UHDTV standard, however, provides several other additional enhancements over HDTV parameters. These are higher frame rates, more contrast in images (dynamic range), better colours and immersive audio. The intent of a suitable combination of all these enhanced parameters is to provide an “immersive” and better experience for the viewer (“better pixels”).
The EBU Technical Committee believes that the current focus of the CE industry to provide only an increased resolution (“4k”) and ignoring other enhancements is not a sufficiently large step for the introduction of successful new broadcasting services.
New broadband services, such as YouTube, Netflix and Amazon’s, and disruptive technologies, such as Dolby Vision, are capable of delivering these extended options as Over-The-Top or enhanced services.
In Japan, the Administration, together with NHK, has a roadmap to deliver a UHDTV service called “Super Hi-Vision” (“8k”) in time for the 2020 Olympics3. The impact of this on the rest of the world is unclear at present.