Playtester here.

Me and a bunch of other guys have been tasked with testing new evolution methods. We havent really seen much except the stuff that's already out there EXCEPT

Rattatusk. A normal/fairy split evolution that occurs when Rattatat is holding Fairy Fluff and levels up when an Orotto is in your party. The method of evolution is not groundbreaking, but I just wanted to throw another pokemon at you. It's weird that it hasn't been mentioned, seeing as how Meowstic, Helioptile, etc were. Helioptile, btw, will only evolve when the camera "sees" sunlight.