Pokémon GO has confirmed that Tinkatink will be the featured Pokémon for the next Community Day on April 11, with Shiny Tinkatink also available for the first time. During the event, players will encounter increased spawns of Tinkatink and can evolve it into Tinkatuff and then Tinkaton, with Tinkaton able to learn the exclusive move Gigaton Hammer. The Community Day will also include a paid Special Research story, event bonuses and other limited-time activities. Trainers will have a chance to collect the full evolution line and take advantage of the event rewards while it runs.
Source: Official Pokémon GO blog and Pokemon.com