I wouldn't read too much into the moves that've been used by the Pokémon themselves, look at Sharpedo and Duskull using moves that arguably haven't even been released (or can't learn), I'd look far closer at the actual design of the Pokémon themselves. Look no further than Glalie anyway, learns literally any Dark move you'd want it to do so, and yet, pure Ice type. Without Levitate.
Chespin looks like another Grass/Ground line to me, just the colouring of him. Fennekin I'm undecided on, I love her design but.. I can't see them making a Fire/Psychic type out of her. Just doesn't feel like something Gamefreak would do. Froakie looks like Water/Ground too.. actually.. I'm not that fond of Froakie actually so I'm not too fussed what he turns out to be..
Xerneas looks like a Steel/Psychic type to me, whilst I don't actually think Yveltal will have the Flying type, just a gut feeling but I think it'll be Fire/Psychic actually, or even.. even Fire/Dragon, possibly with Levitate. Just something about it. Yveltal is easily my most favourite thing released since I first saw Hydreigon, so.. I'm very interested to see what they do with him.