Niantic attempts to redeem itself by releasing a Halloween event for Pokemon GO which runs from Oct 25 - Nov 1. Confirmed features include:
2x Candy for catches of any type
1/2 distance needed to hatch eggs of any type + 2x Candies that you get from hatched eggs
More sightings of Ghastly, Drowsy, Cubone, and Meowth (+ their evolutions) Also Zubat for some ungodly reason
Damn I said I was over this game until they released Ditto, the Legendary Birds and Mew/Mewtwo. Hopefully a Xmas event will have Ice Pokemon at high rates.