Just chiming in, the reason people are pointing out that Gamefreak is being coy with Sylveon's type is because, well, they specifically mentioned its type and made a point that it was unknown.
Unless Gamefreak also brought attention to Reshiram and Zekrom's types pre Gen V, rather than simply not saying anything about them, I'm not sure it's quite a parallel case. --- <3 and (/|\) ! http://i.imgur.com/khPxrAW.png
http://24.media.tumblr.com/9e9a2bcfd16363c93b0fb43854ac1740/tumblr_mi7uykxGmz1s5z7cpo1_500.jpg --- Everyday the sun comes up around her, she can make the birds, sing harmony! http://i.imgur.com/VBsWOu2.png <3 Ain't no woman like the one i got..