Our friends over at comicbook.com have updated with some information from the instagram feed of director Brian Singer
Brian Singer updates X Men
Singer confirms Morlocks and Caliban for X-Men: Age of Apocalypse. Caliban, if you don't know, was a very meek, skinny, bitch like Morlock but feel into the hands of Apocalypse and became a bad ass and eventually one of his 4 Horsemen. Be interesting to see how this plays out in the movie.
Be sure to follow Singer on Twitter for updates! Brian Singer Twitter