I'm getting a little nervous at the lack of new evolutions to old Pokémon. They are, literally, my favorite part of each generation's batch of new Pokémon. And so far, only Gen 2 and Gen 4 have really delivered in that area.
I will be so, so disappointed if we don't get a bunch of new evolutions. Gen 5 broke my heart with its lack of any evolutions, I don't want to see that happen again. (Although Mega Evolutions are a very nice compensation...)
Maybe this will be a Gen 4 scenario where the new evolutions won't be available until after beating the game and unlocking the National Pokédex? (Please, let me cling to this hope...!)