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) =