It looks really really really impressive! It's a see through pair of glasses so not like Occulus and they said they invented a new technology: HPU. The glasses will have their own GPU, CPU and HPU and will be wireless.
> To create Project HoloLens’ images, light particles bounce around millions of times in the so-called light engine of the device. Then the photons enter the goggles’ two lenses, where they ricochet between layers of blue, green and red glass before they reach the back of your eye. “When you get the light to be at the exact angle,” Kipman tells me, “that’s where all the magic comes in.”
They could be doing real holographic images with that description, but who knows.