This is such a fluff thread. There are probably a multitude of reasons why we aren't seeing JVC come out with a UHD projector. My guess is it has a lot to with the "4K/UHD" economy. JVC has never been one to put out consumer grade projectors above $10000-$12000. To compete with Sony in overall picture/built quality, QC, lens quality, feature set, and brightness, they would need to bring a UHD product to market at a much higher cost over their current product line. My guess is that next year, when Sony has a ~$8000 4K product we'll see JVC come to the table with a similarly priced competitor product. The projector market is already niche enough and the $10000+ projector market is so niche that not even JVC could sell a projector in that price range and expect to move a lot of product. I don't think JVC sees this as a opportune moment to enter the UHD market. They may make a larger profit from these projectors at a higher price point but they won't be selling the same volume as their current lower cost 1080p products.
Other non-economical reasons for JVC could be low yield UHD chips. They may need more time to refine the manufacturing process to get higher yields of acceptable panels. There could be other technical difficulties they can run into such as video processing, especially if they want to do 8K e-shift, the processing power to do that has to be substantial and costly.
Edited by Seegs108 - 10/7/13 at 2:52pm