FloatingWaffles on 20 October 2016
It's only 3 minutes, so at most I imagine is there will be the official name, a look at the system itself and what it actually is, such as a portable/home console/hybrid of both, etc and then maybe end with a bit of new footage of Zelda running on it as a tease, ending with an official full reveal date where they fully show it off, as this is just a preview.
