Ah, yeah, that would make more sense. But why, then, are Glaceon and Leafeon post-game only? Makes no sense, that.
Who know's. But it might be possible to make up for it,that the Ice and Moss Rocks were moved somewhere else since Eevee and it's evolutions were included. That or they want to encourage you to trade them over to Black and White. Similar to HG/SS.
My Wife:Skyla http://safebooru.org/index.php?page=post&s=view&id=665863