Not necessarily. There could still be room for these bulbs if they turn out to be as energy efficient as LEDs or CFLs, but are less expensive to manufacture (leading to lower off-the-shelf costs).
Don't hold your breath. The antireflection coatings and photonic crystals required to reach LED efficiencies would be much more complex (expensive) than the LEDs themselves.
This is just grant fishing. It's not going anywhere. Similar technologies are potentially more useful for thermophotovoltaics, but even there they aren't cost effective.
This is just grant fishing. It's not going anywhere. Similar technologies are potentially more useful for thermophotovoltaics, but even there they aren't cost effective.