>>12964100Sylveon has OU potential if they don't screw up the stat distro like they did with flareon or glaceon (I'm thinking 65/60/60/110/130/95 is how it'll go).
poodle and flamingo willl evolve, but they'll be 510 at best.
flabebe isn't going anywhere even if it gets an evo.
xerneas is uber.
i can't think of any other fairies if more have been revealed.