Shaymin Global release : r/TheSilphRoad

Shaymin Global Release Special Research : r/TheSilphRoad

Yamask, Pokémon GO Wiki

SHINY EVENT SHAYMIN GIVEAWAY - REVERSE GTS THURSDAY

Meta-Wash Pogo

Hoothoot, Pokémon GO Wiki

Sky forme Shaymin will be the best non-shadow grass type pokemon (if released this year Go Fest) : r/TheSilphRoad

Sableye, Pokémon GO Wiki

Shaymin has been fixed : r/TheSilphRoad

An error on the Pokémon GO Fest - Pokémon Global News

Toys 'R' Us giving away Shaymin in February - Bulbanews

Shaymin arrives in a free global Special Research

The 3 grass types and the last sentence of the announcement hint at shaymin for go fest 2020 : r/TheSilphRoad

Uxie, Pokémon GO Wiki