Shiny Tapu Koko distribution for Europe and Australia (Update: North America too!)

It’s available right now through Mystery Gift! Get it for your copies of Pokémon Sun and Moon.

Shiny Tapu Koko available for PAL, American region games - Bulbanews

List of American region serial code event Pokémon distributions (Sun, Moon, Ultra Sun, and Ultra Moon) - Bulbapedia, the community-driven Pokémon encyclopedia

POKÉMON CARD GAME sv3a 019/062 RR Tapu Koko

Shiny Tapu Koko now available as a Mystery Gift in Europe! : r/pokemon

Caught a shiny Tapu Koko on my third raid! : r/pokemongo

Marowak

Participate in final Pokemon Global Link competition and receive a Shiny Tapu Koko (All Pokemon in National Dex eligible, October 3rd deadline)

English - Project Pokemon Forums

List of American region serial code event Pokémon distributions (Sun, Moon, Ultra Sun, and Ultra Moon) - Bulbapedia, the community-driven Pokémon encyclopedia

September 2016 - News

Shiny Tapu Koko RELEASED! How to Get Shiny Tapu Koko in Pokemon Sun and Moon

Pokémon of the Week - Tapu Koko

SM - North America Shiny Tapu Koko - Event Pokémon News - Project Pokemon Forums

August 2017 - News