List of Pokémon forms by release date/2020

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

In 2020, the following medals became achievable for the first time:
 * Unova Gold Unova Gold.png.

January
Shiny Spinda pattern 7 was released with the change of Field Research.

Shiny (1) =

January
Shiny Wurmple was released on Hatchathon 2020. Evolution of shiny Wurmple are only available after the event ended.

Shiny (1) =

January
Shiny Heatran was released with its second release.

Shiny (1) =

January
Several Unova-region Pokémon were released with the release of Trade Evolution.

Regular (35) =

January
Shiny Wurmple family was released after the end of Hatchathon 2020.

Shiny (4) =

January
Shiny Piplup became available on the twenty-fifth Community Day.

Shiny (3) =

January
Darumaka and Standard Mode Darmanitan were released on Lunar New Year 2020.

Regular (2) =

January
Scraggy was released with the release of GO Battle League.

Regular (2) =

February
Woobat was released as a Research Breakthrough reward.

Regular (2) =

February
Minccino was released on Limited Research day.

Regular (2) =

Shiny (2) =

February
Tornadus was released as a Raid Boss.

Regular (1) =

February
Shiny Riolu and Hippopotas were released on Sinnoh Celebration.

Shiny (4) =

February
Audino, Alomomola and shiny Chansey family were released on Valentine's Day 2020.

Regular (2) =

Shiny (3) =

February
Shiny Lickitung was released on Lickitung Raid Day.

Shiny (2) =

February
Shiny Rhyhorn was released on the twenty-sixth Community Day.

Shiny (3) =

March
Shiny Spinda pattern 6 was released with the change of Field Research.

Shiny (1) =

March
Thundurus was released. Unova Gold medal became achievable for the first time.

Regular (1) =

March
Shiny Darkrai and shiny Skorupi were released on Team GO Rocket Global Take-over.

Shiny (3) =

March
Shiny Timburr was released on GO Battle League Season 1 Launch Celebration and then Rufflet was released when Season 1 kicked off.

Regular (2) =

Shiny (3) =

March
Shiny Cobalion was released.

Shiny (1) =

March
Genesect and shiny Nincada were released on A Drive to Investigate.

Regular (1) =

Shiny (2) =

March
Shiny Teddiursa was released on Safari Zone in St. Louis.

Shiny (2) =

March
Gothita, Solosis and shiny Baltoy were released on Psychic Spectacular 2020.

Regular (6) =

Shiny (2) =

March
Landorus was released.

Regular (1) =

April
Stunfisk and shiny Croagunk were released on Tricky Pokémon.

Regular (1) =

Shiny (2) =

April
Shiny Exeggcute was released on Spring Event.

Shiny (2) =

April
Shiny Chinchou was released on Safari Zone in Liverpool.

Shiny (2) =

April
Shiny Volbeat and Illumise were released on Buddy Up.

Shiny (2) =

April
Shiny Abra was released on the twenty-seventh Community Day.

Shiny (3) =

May
Shiny Venonat was released on the Throwback Challenge 2020: Kanto.

Shiny (2) =

May
Shiny Voltorb was released on the Safari Zone Philadelphia. Shiny Dunsparce was released on the Throwback Challenge 2020: Johto.

Shiny (3) =

May
Shiny Virizion was released.

Shiny (1) =

May
Shiny Skitty was released on the Throwback Challenge 2020: Hoenn.

Shiny (2) =

May
Shiny Terrakion was released.

Shiny (1) =

May
Shiny Glameow was released on the Throwback Challenge 2020: Sinnoh.

Shiny (2) =

May
Shiny Seedot was released on the twenty-eighth Community Day.

Shiny (3) =

May
Reshiram will be released. Regular (1) =

June
Several Galarian forms will be released on the Throwback Challenge Champion 2020. Galarian Farfetch'd and its evolution Sirfetch'd were added with the other galarian forms to the game code, but haven't been officialy confirmed by Niantic yet.

Regular (10) =

June
Shiny Weedle will be released on the twenty-ninth Community Day.

Shiny (3) =