In addition to the increase hatch and shiny rates, the following bonuses will be active during the event hours:
- 2 km Eggs will drop much more frequently from PokéStops
- 2× Stardust from hatching Eggs
Trainers will also be able to spin Photo Discs at PokéStops during the event to receive event-themed Field Research tasks. Trainers who complete these tasks will receive candy, Stardust, Berries, Great Balls, and XP as rewards.
- Sources
Riolu is the first star of a new Pokémon GO event—Hatch Day!
pokemongolive.com