https://techcrunch.com/2018/11/30/niantic-confirms-that-pokemon-go-is-getting-pvp-battles-soon/

Two and a half years after the launch of Pokémon GO, it’s still missing one major staple of the main series games: player versus player battling.

In a series of teaser tweets this morning, the company confirmed that the battle system is on the way, noting only that it’s “coming soon”.