After today's promo I'm convinced that Sylveon is an entirely new type of Pokemon
Besides the whole being super secretive about it and showing it doing attacks that leave everyone just like whatttt, my main indicator is this:
At the end of the trailer it showed Eevee and all the eeveelutions in a circle, each Pokemon was in a circle that matched their typing color. The strange thing was that Espeon was Purple instead of Pink and Sylveon was Pink. If psychic is to now be represented by Purple then what will Pink be?