Eevee's Eighth Evolution, Sylveon, Is the Newest Pokémon Announced for “Pokémon X” and “Pokémon Y”!, Game News

Pokémon X and Pokémon Y are planned to release simultaneously worldwide this October.

New Eevee merchandise is being showcased. Centro believes this confirms no new eeveelution : r/PokeLeaks

Pokémon X And Pokémon Y To Introduce 'Fairy-Type' Pokémon? - My Nintendo News

A New Evolution of Eevee Announced for Pokémon X and Y - News - Nintendo World Report

How to get Eevee in Pokemon Y - Quora

Sylveon Pokémon: How to catch, Moves, Pokedex & More

Y (Adventures) - Bulbapedia, the community-driven Pokémon encyclopedia

Pokemon Go Eevee Evolutions Guide: How To Evolve Eevee Into Espeon, Sylveon, Vaporeon, And More - GameSpot

Pokémon Go Gen 6 Pokémon list released so far, and every creature from X and Y's Kalos region listed

Pokémon X and Pokémon Y Preview - Preview - Nintendo World Report

Sylveon Movesets and Best Builds Pokemon Scarlet and Violet (SV)｜Game8

Pokemon GO reveals Luminous Legends Y event, debut of Yveltal

Pokémon X and Y - The Cutting Room Floor