We received a HoloLens development kit in The MKX® Labs. According to Microsoft, this is what it is:
Microsoft HoloLens is the first fully untethered, holographic computer, enabling you to interact with high‑definition holograms in your world.
While this is somewhat hyperbolic (I don’t this these are holograms, it’s just really good augmented reality), I was very impressed. These are my impressions.