A big update is now available for Pokemon Go on iOS and Android. Niantic has rolled out the recently revealed quest system, which introduce new objectives to complete and more story elements to the mobile game.
Following the update, players can take on two different types of "research" quests: Field Research and Special Research. Field Research quests are distributed at PokeStops and challenge players with completing various tasks, such as taking part in battles or catching specific Pokemon.
Special Research quests, on the other hand, are "story-driven activities" assigned by Professor Willow. These "take Trainers further into the world of Pokemon Go than ever before." The initial batch of Special Research quests are linked to Mew, which players will have a chance to encounter after completing the storyline.
In addition to that, players will earn various items for completing these quests. Players will also receive a stamp for the first Field Research task completed each day. Collecting seven of these stamps will lead to a "Research Breakthrough," which will unlock additional rewards, potentially including an encounter with another Legendary Pokemon.
Mew arrives in Pokemon Go just as a different Legendary leaves the game. The Legendary Psychic/Flying-type Lugia was recently available in Raid Battles until April 2. That day also marked the end of the Easter-themed Eggstravaganza event, which made it easier to hatch rare Pokemon from Eggs for a limited time.
Pokemon Go Patch Notes