Update 1/23/18: Wave 2 of Gen 3 Pokémon are now available in Pokémon GO. Reports other shiny variants have been spotted including Aron.
The Steel/Rock type Pokemon Aron has been spotted in its shiny variant in the wild! pic.twitter.com/sLGh0h0pWK
— The Silph Road (@TheSilphRoad) January 23, 2018
New year, New Pokémon for Pokémon GO! Niantic has announced earlier today the addition of 23 new Pokémon coming to Pokémon GO. These new Pokémon are originally from the Hoenn region from Pokémon Ruby and Pokémon Sapphire and will be available later on today. We also get a glimpse of the upcoming Pokémon as pictured above.