Pokémon Go is getting a fully-supported PVP Battle League in a forthcoming update due sometime in early 2020.
This is big news as Pokémon Go’s current PVP mode lacks any form of support for in-game tournaments or rankings – which has left fans to make their own.
The current main provider, Silph Road, uses web pages you must manually input all your team data into. And, while it is a pretty capable bit of software, it’s completely divorced from the game itself.
Source: Eurogamer Pokémon Go to get dedicated in-game PVP league in 2020