Seeing as they're releasing two sister games for Pokemon Sun and Moon, I hope that they go along the Black & White 2 route and make them sequels that take place a couple years after the events of the original games and give us new areas to go to, maybe even a new area to start from. Maybe we'll see Lillie and Lusamine again!
Also, these Necrozma/Solgaleo and Necrozma/Lunala fusions look awesome. I wonder what the story behind this fusion is going to be about as they didn't even give us any hints unlike how they did with Kyurem. This will definitely be interesting.
Another thing, since this is a continuation of Gen 7, we won't be seeing any new Pokemon but as you can see here, we'll definitely be seeing some new formes.