Mark -
It seems to me that in the case of 4K Ultra HD we have a "chicken and egg" situation. Unlike the introduction of consumer HDTVs a little more than a decade ago, where we had an HD source in the form of broadcast TV at 720p and 1080i, its hard to see 4K being accepted by even many early adopters unless there is a viable 4K source.
Of course a few of us here on the AVS Forum will be exceptions. For example several of us here on AVS, myself included, invested in a HD capable professional grade CRT front projector a full decade before HD broadcasts started in the USA. The MSRP for such projectors in the late 1980's and early 1990's was similar to that of the VW1000 today and if adjusted for inflation they were much more expensive that today's consumer UHD displays/projectors. The only video source in those days was 480i, e..g., from broadcast or laser disc, along with a multi-thousand dollar line doubler just to scale 480i to 480p (I'm aware that there was limited HD programming offered in Japan in the 1990s using the analog HD MUSE system). I have no data to suggest how many such projectors were being sold to consumers annually in the USA two decades ago for use in their home theaters, but it may have only been in the hundreds. That is essentially the parallel to what you have today with your VW1000 or what any owner of a new 4K flat panel UHD TV will have (i.e., very expensive high resolution display with (built-in) upscaling of lower def. video, but no native UHD source). For UHD it appears that a next generation of broadcast digital TV may go that route, perhaps jumping directly to 8K UHD, sometime in the first half of the next decade. As a result it appears to me that for manufacturers to actually begin selling 4K UHD displays/projectors even to the broader early adopter crowd there must be some industry standard-based UHD video source. I don't realistically don't expect to see a standard for a Blu-ray UHD disc before 2014 and production players and movies before 2015. But if the manufacturers were to decide this needs to be a priority, we might perhaps have initial products by the Xmas 2014 holiday season, but this is not likely. Perhaps the PS4 platform may still have a roll for an early UHD roll-out if its hardware is UHD capable and there is an upgrade path via firmware to support playback of of a UHD blu-ray discs, but even Sony cannot currently know if that will be the case since a Blu-ray UHD standard is yet to be developed.
Edited by Ron Jones - 2/28/13 at 9:20am