This is vaguely the same footage of Pokkén Tournament we've seen over the past couple weeks, but it's a direct capture of the game, so what the hell. Good recap of the current roster, though do note that the voice over and text are in Japanese. Long way to go before this'll get localized.
What's going on with Pikachu (starting at 1:25)? That expression is Kirby-in-the-USA angry.