List of Pokémon eggs changes

From the release of the game, until now, there were several changes to Pokémon Eggs distances and their hatchlings. The first observed changes to egg distances occurred in late summer of 2016.

There were also some temporary changes of eggs pool during the events, these events were:
 * Eggstravaganza event in April, 2017
 * Equinox event in late September, 2017
 * Hoenn Pokémon Eggs event in late January, 2018
 * Eggstravaganza event in late March, 2018
 * Water Festival event in June, 2018
 * Ultra Bonus Event in September, 2018
 * Hatchathon event in November, 2018

July, 2016
Below there is a list of original Pokémon Egg hatchlings introduced with release of the game.

Then-current list=

Late Summer, 2016
Region-exclusive Pokémon were removed from eggs.

Changes list= Then-current list=

November, 2016
Niantic changed one Pokémon and removed two, according to players community feedback. Changes list= Then-current list=

December, 2016
Due to release of Baby Pokémon from Johto region, Baby Pokémon were added as egg hatchlings and their evolutionary forms were removed from eggs. Changes list= Then-current list=

February, 2017
With the beginning of the Valentine's Day event many of Kanto-region Pokémon were changed to hatch from another eggs. Changes list= Then-current list=

February, 2017
Week after the first eggs hatchling changes of 2017, there was another one due to release of Johto-region Pokémon. Changes list= Then-current list=

April, 2017
During the Eggstravaganza event, there was the first temporary change to the possible eggs hatchlings. These Pokémon were hatching from eggs between April to April, 2017. After this time the all hatchlings were the same as prior the event.

May, 2017
Few Pokémon were made not possible to hatch from eggs after Grass Weekend event.

Changes list= Then-current list=

July, 2017
On the beginning of the 1st Anniversary event there was some other changes in egg hatchlings distances and some of Pokémon were removed from eggs.

Changes list= Then-current list=

July, 2017
At the end of the 1st Anniversary event there was adjustments of what eggs some Pokémon hatch from.

Changes list= Then-current list=

Late September, 2017
During the Equinox event in late September there was the second temporary change in Pokémon species hatchable from eggs. Only these Pokémon were hatching from eggs between September and October, 2017. After this time the all hatchlings were the same as prior the event.

October, 2017
With the beginning of Halloween event in 2017, there were few first Pokémon of Hoenn region added.

Changes list= Then-current list=

December, 2017
With the main release of 50 Hoenn-region Pokémon to the game there were some of them made available to hatch from eggs.

Changes list= Then-current list=

December, 2017
With the release of next 20 Hoenn-region Pokémon to the game there were some of them made available to hatch from eggs.

Changes list= Then-current list=

January, 2018
With the release of next 23 Hoenn-region Pokémon to the game, there were some of them made available to hatch from eggs.

Changes list= Then-current list=

Late January, 2018
During the Hoenn Pokémon Eggs event in late January there was temporary change in Pokémon species hatchable from eggs. Only previously added Hoenn-region Pokémon were hatching from eggs between January and February, 2018. After this time the all hatchlings were the same as prior the event.

February, 2018
With the release of 20 more Hoenn-region Pokémon to the game, there were some of them made available to hatch from eggs.

Changes list= Then-current list=

March, 2018
During the 2018 edition of Eggstravaganza event, following Pokémon hatched from 2-km Eggs for the time of the event. After the event had ended, eggs hatchlings were the same as prior the event.

Spring, 2018
Sometime after the 2018 Eggstravaganza event, there were many Pokémon species removed from the pool of the possible eggs hatchlings. Changes list= Then-current list=

June, 2018
During the 2018 edition of Water Festival event, there was very high chance to get 2-km Eggs with following Water-type Pokémon hatching from them. After the event ends, eggs hatchlings will be the same as prior the event.

June, 2018
The Friends system introduced 7-km Eggs which hatch Alolan Pokémon. Changes list= Then-current list=

July, 2018
The Pokémon GO Fest 2018 released Alolan Diglett and Geodude in 7-km Eggs. Changes list= Then-current list=

September, 2018
Region-exclusive Pokémon from Kanto with addition of Tangela and Porygon were added to the 7-km Eggs in Ultra Bonus Event.

October, 2018
With the main release of Sinnoh-region Pokémon to the game there were some of them made available to hatch from eggs. Changes list= Then-current list=

November, 2018
Budew was released with several changes of some Baby Pokémon. Changes list= Then-current list=

November, 2018
Pokémon with Sinnoh evolved forms were hatched in 2-km Eggs in Hatchathon.

December, 2018
An update in Adventure Sync reward brought back Kanto-region Starter Pokémon and Ralts. Changes list= Then-current list=

December, 2018
During the Holiday event, there was a major shakeup in all egg pools with the addition of three new Baby Pokémon. Changes list= Then-current list=

January, 2019
The Adventure Sync Hatchathon added Sandshrew and Misdreavus back. Changes list= Then-current list=

January, 2019
Bonsly was added and Sandshrew was removed. Changes list= Then-current list=

February, 2019
The Valentine's Day updated the egg pool in a large extent, with many new Pokémon, including Happiny, being hatchable for the first time. The egg pool was not changed after the event. Changes list= Current list=