List of Pokémon forms by release date/2016

July
Main release of Kanto-region along with the game launch. Kanto-region Pokédex introduced 151 new Pokémon species and distinct forms. Kanto Bronze, Silver and Gold  medals became achievable for the first time.

Regular (145) =

November
Ditto was released disguised as other Pokémon

Regular (1) =

December
Release of Johto-region Baby Pokémon. Johto-region Pokédex introduced 100 new Pokémon species and 127 distinct forms. Johto Bronze medal became achievable for the first time.

Regular (8) =