Niantic has announced that Shiny Cubone and Shiny Ponyta have made their Pokémon GO debuts to celebrate Ingress Prime. This means that Shiny Marowak and Shiny Rapidash have also been added to the immensely-popular mobile game as well. In addition, Shiny Alolan Marowak can be encountered and caught after a Raid. New Ingress-themed apparel has also been made available for your avatars to wear in Pokémon GO. The Ingress Prime White, Ingress Prime Green and Ingress Prime Blue shirts are now available for free to all Pokémon GO players. For a limited time, increased spawns of Cubone and Ponyta are now available in the wild in Pokémon GO.
Source: The Silph Road @TheSilphRoad