http://www.newsweek.com/pokemon-go-halloween-raid-update-1184590 > Pokémon Go ’s annual Halloween event is live and with it comes new Raid Bosses for trainers to battle and catch. > While the highlight of the new bosses is Giratina, the Ghost and Dragon-type Legendary Pokémon from the Sinnoh Region, there are others that share the ghostly theme of Halloween. These changes began with the update on Oct. 23 at 4 p.m. EDT and are likely to stay until at least Nov. 1.