Bye bye, Hoenn Cap Pikachu. The Sinnoh Cap Pikachu distribution for copies of Pokémon Sun and Pokémon Moon begins today!
Like with the previous two Ash-Hat Pikachu, Sinnoh Cap Pikachu can be obtained via the Mystery Gift menu by using the code PIKACHU20 - from today until October 9th. Assuming you aren't resorting to save resetting shenanigans, you can only use the PIKACHU20 code once per save file - as we've previously explained.
I'm personally planning to get a Sinnoh Cap Pikachu on my copy of Sun. Anyone else grabbing one?