The next Pokémon GO Community Day Classic is set for May 16 and puts the spotlight on Deino, giving players another shot at catching its Shiny form and stacking candy for evolution. The event also highlights Zweilous and Hydreigon, with the final evolution able to learn the charged move Brutal Swing for a limited time. As usual, the event features bonuses like boosted spawns and extra rewards along with a new paid Special Research for players who want a bit more structure. It is a solid excuse to jump back in, especially for anyone who missed Deino the first time around.
Source: Official Pokémon GO blog and Pokemon.com