Hoenn Pokedex Resurfaces During Pokemon XY Anime Finale Before 'XY

The Pokemon XY anime arc has come to an end, and various fans have noticed a small detail that intrigues them regarding the future of the series.

Pokémon: The Series (Anime) - TV Tropes

Misty (anime), Pokémon Wiki

Pokémon XY - Page 8 - UPNetwork

Was watching XYZ when Ash straight up pulled out the Hoenn PokéDex from ORAS instead of his Kalos one to scan a Quilladin. (Reposted for text error) : r/pokemon

PM2019 103/104 - VS Elite Four 1 Hour Battle Special! Double Episode Discussion! : r/pokemonanime

Pokemon 8376 Mega Metagross Pokedex: Evolution, Moves, Location, Stats

Is the Pokémon Sun and Moon anime bad? - Quora

Pokemon XY: Featuring the Latest in Pokedex Technology

Why do people say XY and XYZ is the best Pokemon anime if it's not Diamond and Pearl? People just like XY because of the animation. - Quora