The 2020 Pokémon Video Game Championship Format Rules have been announced. Effective Saturday, 4 January 2020, the Pokémon Video Game Championships will shift to Pokémon Sword and Pokémon Shield.
Link: https://www.pokemon.com/us/pokemon-news/2020-pokemon-video-game-championships-vgc-format-rules/
Link: https://www.pokemon.com/us/pokemon-news/2020-pokemon-video-game-championships-vgc-format-rules/