Scott just returned from CEDIA, and he saw some great projection TVs that take it to the next level. The first was Epson LS500. It's what Scott calls a "pixel wiggler" to achieve 4K. Compatible with HDR. 4000 lumens. It has separate HDMI and USB ports for streaming devices. It also comes with an ambient light rejecting screen. Cost starts at $5,000. Scott says it's a short-throw projector, laser-illuminated and even in ambient show floor light, it looked very impressive.
LG also showed its 2nd Generation TV replacement, HU35LA. It's 4K with pixel wiggling as well.