From Bulbanews, your community Pokémon newspaper.
Code to be revealed during anime broadcast
Update: An Alolan Sandshrew distribution has also been revealed
Alolan Sandshrew, Alolan Diglett, and Alolan Grimer will be available for Korean region games via universal codes that will both be revealed during the Pokémon anime on May 2, 2017.
The code for Alolan Sandshrew will be revealed on the Daegyo Auorini kids channel in Korea on May 2, 2017 at 5 pm.
The code for Alolan Diglett will be revealed on the Animax channel in Korea on May 2, 2017 at 6 pm.
The code for Alolan Grimer will be revealed on the KBS KIDS channel in Korea on May 2, 2017 at 6:40 pm. The code can be redeemed from May 2 to 22, 2017. Alolan Grimer will be level 10 and know the moves Bite, Harden, Poison Gas and Pound.