From a projection standpoint, LCoS is certainly not dead. I haven't heard of anything that will replace that and DLP in projection type displays anytime soon.

And projection is still where you get the best bang for your buck in the larger screen sizes...60" and up. At 50" they are nearly to cost/performance parity with DLP and LCoS.

We've been waiting for the promise of thin screen technologies like SED and OLED for a while, but the promises have yet to be realized.

Now we just need Sony to come out with a laser or LED fired LCoS (SXRD) display and that will take the bulb replacement cost out of the equation as well.

But you are right, eventually the rear projection technologies will fall out of favor and be replaced with something else. People want thin displays and front projection, LCD, OLED or some other types of technology are the only way to achieve this.

I really think they've reached the optical boundaries for depth of rear projection displays...as in they aren't going to get much thinner...Shimmering Screen Effect was already an issue with the 1st gen LCoS displays and only gets worse as they up the mirror angle.

I just don't see anything overtaking LCoS price/performance wise for at least another year and perhaps as long as 3.