CoroCoro revealed two Dark/Psychic Pokemon, Maika and Karamanero (Japanese Names btw. I'm 99% sure they'll be called Inkay and Malimar in English.)
All the other new stuff here.
Dark/Psychic is a pretty good typing I must say. I'm a bit disappointed that Xerneas is pure Fairy and not something like Fairy/Steel, but it's okay.