Mewtwo will be joining Pokémon UNITE with two unique UNITE licenses, Mega Mewtwo X will appear on July 21 and then Mega Mewtwo Y will join the fight in mid-August

Pokémon UNITE is continuing to add new content, including new playable characters and in-game items, on a regular basis. Read on below to learn more:

Pokémon UNITE players and fans can look forward to Mewtwo officially being added as a playable character on July 21, 2023! Mewtwo will be joining with two unique UNITE licenses. On July 21, Mega Mewtwo X will appear! Then in mid-August, Mega Mewtwo Y will join the fight. To learn more, be sure to stay tuned to the official Pokémon social media channels.

Source: Official Pokémon website