A new Pokémon Sun and Moon distribution has been announced for Japan. During the Pikachu Outbreak 2017 event at the first-ever Pokémon GO Park in Yokohama, a special Pikachu will be distributed to all players at the event from August 9 through August 15. No further details have been announced for this distribution, such as the specific content, but stay tuned for any updates.
Source: Serebii