Okay, finally got a little more time to post. In addition to some new Pokemon, some interesting new game mechanics have also been revealed. One is a new kind of battle called a Sky Battle. It's apparently fought using only Pokemon that are able to fly or have the ability, Levitate. There's also going to a new type of wild Pokemon encounter called a Horde Encounter, where the trainer encounters five wild Pokemon at once. The resulting battles are one against five, and the Pokemon encountered this way can either be five Pokemon of the same species, or an assortment of different ones. Here's a video that shows a little bit of these new features.
I'll keep an eye out for more information. So stay tuned.