If it was Hololens, then going by Paul T. and Mary Jo F. of Windows Weekly, it was not as impressive as the Prototype the year prior.
They said field of view was reduced, things are still in Augmented space, just have to move your head more to see it all.
People talked that is was cool, but not really "Blowing things out of the Water".
Don't get me wrong I am all for Augmented Reality, to my mind it sounds well better then VR !!!!!
Plus you will not have a Huge gopping head set on your face, just glasses that overlay the real world.