Although nothing is confirmed, a very reliable source that goes by the name of 'Hiro' (or 'Pokexperto') has stated that there is in fact a new 'Fairy' type being introduced in the two new games. While it's been speculated by many people for awhile, the general consensus is, if Hiro claims something, it's generally correct. In the past, he has confirmed that Mewtwo's new Pokemon was a new forme, instead of an evolution, he has hand-drawn all of Gen 5's Pokemon before they were released (so he wasn't sued for taking photographs) and was scarily accurate.
