Maybe you're not very familiar with the Hololens. It looks very different to me. The "goggles" look seems to indicate the rendering will cover the full field of view. The computer pack seems to indicate they are either going for greater visual fidelity or longer battery life (or both). And the controller is more akin to the desktop VR systems than Hololens' janky hand gestures (though I would honestly prefer someone just solve hand gestures already).

This is a lot more different from the Hololens than the Vive and Rift are from each other.

It seems to have a larger field of view. Hololens (I have one) is about the size of a credit card held out with your arm half extended. This one is the size of a VHS tape. Also, the unit appears to be lighter as processing is done by a pocket computer that comes with it. Hololens is completely self-contained and thus heavier and less comfortable. I wonder if they'll use the same Unity/C# dev tools.