AstroGamer on 12 May 2013
I am willing to assist in this thread.
Also, Pokemon Smash revealed a little about what types Sylveon is not. On the show, they make 3 guesses on what type Sylveon is and the host tells them if it is. So far they've shown is not Poison, Steel or Fighting.
In addition, more info for X and Y is coming on May 19th episode
