So we actually get new Megas, then. That confirms one mystery. They all look great, but Mega Blaziken is still my favorite of the three. But let's be honest, that was going to be my favorite regardless. The new Mega to impress me the most is Diancie, though. That's not a Mega anyone expected, that's for sure. The fact that they're keeping the ability hidden is interesting, maybe it will get something better than Clear Body.
Now to wait for Rayquaza, but that probably won't be for another few months. I know it's a premature assumption, but that's more than likely going to happen.