Quoted from somewhere:
The movie based on the best selling book WORLD WAR Z by Max Brooks is gaining momentum, gaining a director in Marc Forster and screenplay by J. Michael Straczynski. It looks to be the first truly BIG epic zombie movie on a scale never seen before.
Marc Forster recently signed on to direct, and Straczynski will be doing one more draft based on the filmmaker’s new notes. Straczynski calls the film “a thriller”, comparing it to the Bourne films. As cool as Straczynski makes the film sound, I’m a little nervous about the comparison to the Bourne movies, especially considering that Forster’s latest movie, Quantum of Solace, was heavily criticized for it’s disjointed action sequences.
AICN called Straczynski’s previous draft of the screenplay “a horror epic, a serious, sober-minded adult picture”, potentially “a genre-defining piece of work” with Best Picture potential (really?!). The basic premise of the book is that it is an oral history of the zombie war, compiled by an unnamed government employee. The movie follows this researcher, named Gerry Lane (possibly to be played by Brad Pitt, who is producing the project), as he travels the world conducting interviews with survivors, 10-years later. Forster told Variety that the story reminded him of “the paranoid conspiracy films of the ’70s like ‘All the President’s Men.”
Source - http://www.slashfilm.com/2008/12/04/world-war-z-will-be-a-huge-scale-zombie-movie/