You get More Candies Now for Catching Evolved Pokemon in The Wild
It has been confirmed a while ago by Niantic that catching pokemon in a Evolved for in the Wild will give you more Candy.
Confirmation came through the Pokemon Go Twitter Account:
Trainers, you'll now find more Candies after catching Evolved Pokémon like Pidgeotto in the wild!
— Pokémon GO (@PokemonGoApp) February 17, 2017