Now, updates are rolling out to prepare the game for what appears to be likely the biggest update the game has seen since trainer battles. Team Rocket is coming to Pokémon GO, and we're going to have to go out and fight them. This isn't live in the game yet, but the update text gives us some information on what we'll see when it show sup:New Challenges: Take on Team GO Rocket Grunts in battle! Shadow Pokémon: Catch the mysterious Shadow Pokémon Team GO Rocket Grunts leave behind! So it seems that Team Rocket is going to be out in the world somewhere and that we'll be able to challenge them, fight them and win Shadow Pokémon in the process, using some other method to turn them into regular, non-shadow Pokémon.

Source: Forbes July 17, 2019 21:33 UTC