In 2016, Pokémon Sun & Moon were released, which introduced people to a new region, Alola. there were a total of 803 (including mythical's). however, only 403 are in the alolan pokedex, with the others being able to be transferred from past games. rotom is now your pokedex, called the rotomdex, and z moves were introduced. z moves does a lot of damage,but can only be done once per battle. gyms, and gym leaders were taken out, and were replaced with totem pokemons, and island kahunas. a lot of features were added including SOS battles, where a wild Pokémon send out help to exactly the same Pokémon (or evolutions) to help when weakened.