As the world outside rotates through winter, spring, summer, and autumn, we're excited to announce that the world of Pokémon GO will change with the seasons! Every three months, you can expect to see a new season in Pokémon GO that brings major changes. And like Summer is about the sun, Winter is about the darkness. If that sounds confusing, that's because it is! In Pokémon GO, the seasons change based on the energy of the sun, moon, and stars.

New seasons begin Earlier this summer we reached exactly one full lunar cycle with Autumn's arrival, so the beginning of the newest seasonal season is November. In November, we'll see new types of Pokémon: The Butterfree will be available in Unova in November, a new Eevee will appear on Kanto's Ecruteak Island, and new Salazzle will appear in the Sevii Islands.

As seasonal Pokémon arrive, several mechanics flourish. Seasons prescribe more declines and more increase in the variety of Experience points awarded to players. During Autumn, players will depend on their Pokémon for much of their energy, as the fewer players around consuming Pokémon daily, the less energy players will have... in turn making this part of the new season all about energy expended, not energy generated. In the winter months, Pokémon receive no rewards and appear more frequently. Instead of completely devasting entire cities with a single swarm of flying Drapion, sloths swarm all over locations as more sluggish Pokémon with counter-productive abilities have an increased effect in battling the sloth-like Pokémon. In addition to this, the intensity of each Molting cycle focused on each Pokémon's nature will be different. During months in which a Pokémon is able to efficiently use Deep Roots, Leaf Nuts, or Rain Dance, it will often produce more Eggs at the end of their molting cycle. Similarly, most Pokémon will accumulate more experience at higher levels so that fighting a faster-effort Pokémon during Molting process will suddenly but steadily increase the Pokémon's experience points, leading to an important addition to the new season's story arc: The migration of these Pokémon-dominated Pokémon over time to locations where Pokémon are less active and where they can efficiently regrow their lost experience.

Evolving with Seasonal Pokémon Every three months, during Stage Four or Five of their season, some Pokémon will have greater potential for an evolutionary chain through substitution. These Poles will become spurts of starting Pokémon potential, parties of Pokémon continue to refine their Pokémon's attacks with new cultural attacks, and ever-lengthening schemes of teams assemble to breed which choices can render even with the best team suddenly overpowered in a few arena battles. To better understand these new challenges, we officially placed these Pole encounters into a longer arc of Pokémon evolution, known