Last night you may have noticed that Pokémon GO updated their loading screen. Gone is the Gyarados, and now you have Gengar ready to spring on you. And with this change comes an event! For the next week you will see an increase in ghost types spawning, meaning Gastly, Haunger, and Gengar will start showing up more often. You will also be seeing double candy from pokémon you catch and sent to the professor! Enjoy this short event while you can folks.