In a teaser trailer for the Pokémon Scarlet & Violet DLC Hidden Treasures of Area Zero released August 22, 2023, Pokémon has debuted a brand new Ghost/Grass Pokémon named Poltchageist, the Matcha Pokémon.
Source:https://www.cbr.com/new-pokmon-with-a-brand-new-ability-spotted-in-area-zero/