Nintendo recently applied for trademarks for Pokémon Ultra Sun and Pokémon Ultra Moon (both in English), Pokkén Tournament and Pokkén Tournament DX, plus additional trademarks for Pokémon Ultra Sun and Pokémon Ultra Moon (both in Japanese) along with Creatures Inc. and Game Freak. Pokémon Ultra Sun & Ultra Moon and Pokkén Tournament are scheduled to arrive later this year for Nintendo 3DS and Nintendo Switch, respectively.
Source: Japanese Nintendo
Pokémon Blog 