Niantic has pushed a new update for Pokémon GO updating it to iOS Version 1.99.1 and Android Version 0.131.1. Below are the patch notes for the game.
Patch Notes: November 11th, 2018 - iOS Version 1.99.1 and Android Version 0.131.1
- Trainers can now challenge someone nearby to a Trainer Battle by scanning their Battle Code.
- Trainers can send remote Trainer Battle challenges to their Ultra Friends or Best Friends.
- Trainers can also Trainer Battle against team leaders Spark, Candela, and Blanche.
- Trainer Battles take place in one of three different Trainer Battle Leagues, and each requires a team of three Pokémon. Each Trainer Battle League has different Pokémon CP limits.
- Trainers can earn rewards for participating in Trainer Battles.
- New hair colors and skin tones will be available for Trainer avatars.
Source:
https://play.google.com/store/apps/details?id=com.nianticlabs.pokemongo