Nintendo has unveiled a brand-new promo for Pokémon Ultra Sun and Ultra Moon, titled Strange Evil Trailer. You can check it out in the video below, followed by its official description:
Use new Z-Moves, new forms of Pokémon, and more to challenge the mysterious Necrozma and help save the light in Pokémon Ultra Sun and Pokémon Ultra Moon. Playable on Nintendo 3DS and Nintendo 2DS. Available 11/17.
Source: Nintendo YouTube