List of Pokémon forms by release date/2019

By the start of 2019, the number of released forms was:

January 1st
Pattern 5 of Spinda was available in field research.

Regular (1) =

January 12th
Shiny Totodile became available on the 13th Community Day.

Shiny (3) =

January 15th
Shiny Zigzagoon, Taillow and Groudon became available for the first time during Hoenn Celebration.

Shiny (5) =

January 19th
Shiny Feebas became available in field research.

Shiny (2) =

January 25th
Shiny Psyduck became available on Safari Zone Porto Alegre.

Shiny (2) =

January 29th
Palkia became available as Raid Boss for the first time.

Regular (1) =

January 31st
More Sinnoh Region Pokémon became available.

Regular (17) = Shiny (1) =

February 16th
Shiny Swinub became available on the 14th Community Day.

Regular (1) = Shiny (3) =