Duncan Jones, director of science fiction films Moon and Source Code, will be taking over as director of the film adaptation of Warcraft.  Sam Raimi, director of the Spider-Man trilogy and the upcoming Oz the Great and Powerful, was originally signed as the director, but he detached himself from the project in favor of Oz.

Blood Diamond screenwriter Charles Leavitt will pen the script for Warcraft with production planned to begin this fall.  Warcraft is expected to release in 2015.

Source:  Hollywood Reporter