Sylveon is one of the many evolutions Eevee can become given you follow the exact steps you need to have to turn into that particular evolved form in the Pokémon games. In Pokémon Go, you have to follow similar intricate steps, but these steps are different because Pokémon Go and the traditional Pokémon games do not have the same items. Of the eight Eevee evolutions, Sylveon is not available in Pokémon Go, but we’re closer to finding it following the first release of the Kalos Celebration.
Sylveon is a Fairy-type Pokémon, meaning its one of the rare Pokémon types that are super effective against a Dragon-type. It first appeared during Pokémon X and Y versions set in the Kalos region. With the Kalos region officially joining Pokémon Go, yet no exact release date has been given for the Pokémon’s arrival. It’s been a long-awaited one, too.
The traditional method of how you evolved an Eevee into a Sylveon involves you earning a high friendship with it, which you do battling with it and having it in your party. Evolving Eevee into Sylveon in Pokémon Go will likely work differently, when it releases. It will likely have something to do with Eevee’s affection towards you, and you probably have to make it your buddy when you want it to become Sylveon. We’re purely speculating, though.
We’ll be updating this guide when Sylveon does become readily available in Pokémon Go.