Matthew Vaughn out of X-Men: First Class sequel

With no explanation at this moment it has been announced that Matthew Vaughn has left the director's chair for X-Men: Days of Future Past, the sequel to X-Men: First Class. Despite his departure the cast is still intact, including Jennifer Lawrence and Michael Fassbender, and they are still aiming for the July 2014 release. There are replacements being thrown around already and the one at the top of the list is Bryan Singer.

Singer directed and wrote X-Men and X-2 along with having a writing and producing credit for X-Men: First Class, so his involvement wouldn't be the worst thing in the world. Hopefully he steps in to fill the empty chair.