https://www.gamespot.com/articles/pokemon-go-easter-event-going-on-now/1100-6457573/

A new event is now underway in Pokemon Go. Ahead of this month's Community Day, Niantic is bringing back the Easter-themed Eggstravaganza event, making it easier for players to hatch certain Pokemon and providing extra bonuses for a limited time.

Beginning today, March 22, players will be able to hatch an "even greater variety" of Pokemon from Eggs. In particular, monsters that typically hatch from 5 km or 10 km Eggs, like Wynaut or Ralts, can be found in 2 km Eggs for the duration of the event. Some Pokemon, such as Pichu and Togepi, will also hatch more frequently.