First of all, easter deals a lot with eggs, a lot of eggs. You have to color eggs, find hidden eggs, even eat them. So what could be planned on Pokemon Go for this festival?
It could just be another “festive Pikachu” event carrying it around in a basket.
Other possibilities are;
Breeding Baby Pokemon spawns Decreased distance traveled to hatch eggs Increased egg drop 2x egg incubators Incubators dropping on the first spin of the day Double exp “save your candies” lucky egg increased duration
There is a lot to pick from, however, knowing Niantic, something new and fascinating will happen. Although, it would be interesting to see breeding being added on Easter that already deals with a bunch with eggs. The 2x incubators were found in the source code of Pokemon Go a few months ago. Theorists believed it to be for the Christmas event. As we know, this was not the case. Now the Easter is coming. We may finally get to see it.