Niantic have announced that Trainer battles are coming to Pokémon GO in a new tweet.
— Pokémon GO (@PokemonGoApp) November 30, 2018
Earlier in the day Niantic teased the announcement via the official Pokémon GO Twitter account.
Hmm…what’s this? pic.twitter.com/EyCRUeVINd
— Pokémon GO (@PokemonGoApp) November 30, 2018
Edited by HeroLinik. We’ll update with more information shortly – no details are yet available.
Source: Daily.pokecommunity