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.

The total number of Pokémon species and Pokémon distinct forms (regular and shiny) was updated according to the following events in 2020:

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 was released.

Regular (1) =

June
Shiny Spinda pattern 5 was released with the change of Field Research.

Shiny (1) =

June
More Galar-region forms became available on the Throwback Challenge Champion 2020, rising up Kanto-region Pokédex to 176 distinct forms and Unova-region Pokédex to 179 distinct forms. Also Galar-region introduced 3 new Pokémon species and distinct forms.

Regular (8) =

June
Zekrom was released.

Regular (1) =

June
Galarian Farfetch'd was released.

Regular (1) =

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

Shiny (3) =

June
Shiny Dwebble was released on Bug Out 2020.

Shiny (2) =

July
Ducklett and shiny Pidove were released on the 4th Anniversary.

Regular (2) =

Shiny (3) =

July
Kyurem was released.

Regular (1) =

July
Petilil and shiny Bellsprout were released on Summer Event.

Regular (2) =

Shiny (3) =

July
Victini released on Pokémon GO Fest 2020.

Regular (1) =

July
Shiny Deino released on Dragon Week. Shiny (3) =

August
Elgyem and shiny Staryu and Deoxys  released on Enigma Week. Regular (2) =

Shiny (3) =

August
Emolga, Sewaddle, Cottonee and Bouffalant released on Unova Week. Also, Shiny Roggenrola and Genesect released

Regular (7) =

Shiny (4) =