Diamond Clan and Pearl Clan were introduced for Pokémon Legends: Arceus. We learn about some new characters and a new Voltorb form in the game. It's possible these new Voltorb are different sizes. Pokémon Masters EX and Pokémon Sword and Shield both have Christmas events going on right now. While Pokémon GO is also having a holiday event, we get the three locations for the Kanto part of the Johto tour.