Is that true? Last time I was reading about holographic lenses, it was a flat white laser backlight fed into a waveguide (the hologram part), and filtered through an LCD. An actual LED projector would have darker darks, but I would much rather have a higher resolution..

It's definitely helpful to hear about the waveguide production problems. Obviously, that's going to be the greatest hurdle; after all, they are manufacturing a completely unique object with very small feature sizes.