Pokémon GO Stadium

Pikachu Outbreak is an upcoming Japanese regional event that will be hosted in from August 9, 2017 through August 15, 2017.

Background
The event will be held at the and various facilities around the  area. There will be a Pikachu Carnival Parade held on the second-to-last day on August 14, 2017.

Niantic has stated that this event will offer a unique Pokémon GO experience.