Sadly I don't think most of the Fairy-duals announced (from past Pokemon) so far will really change a few of them. Some might actually become better (Gardevoir) others as far as I can tell, seem only to be slightly better. Meh. --- Only insecure and ignorant people try to debase someone online based on their username.
I'm pretty sure Salamance could still beat Jigglypuff. In fact I'm sure most Dragons can still beat most Fairies.
The only one that I think needs to worry is Hydreigon if it turns out Fairy is also SE against Dark. --- Don't forget to check out my MegaTen themed webcomics at http://www.drunkduck.com/user/Strain42/ (Currently Updating: Persona 4TW Add-On M-F)