List of Pokémon forms by release date/2020

By the start of 2020, the number of released forms was:

January 1st
Shiny Spinda pattern 7 was released.

Shiny (1) =

January 2nd
Shiny Wurmple was released on Hatchathon 2020.

Shiny (1) =

January 7th
Shiny Heatran was released.

Shiny (1) =

January 10th
Several Unova-region Pokémon were made available, featuring Trade Evolution.

Regular (35) =

January 16th
Shiny Wurmple family became obtainable after Hatchathon 2020.

Shiny (4) =

January 19th
Shiny Piplup became available on the 25th Community Day.

Shiny (3) =