World War Z Film Will Be Better Than Expected?

I just happened across this story in The Hollywood Reporter that Damon Lindelof of Lost fame, who also wrote Cowboys and Aliens and the currently screening Ridley Scott not-really-an-Alien-prequel Prometheus, has been brought in for a rewrite to fix up the World War Z movie, especially the ending. The movie is now supposed to do some substantial reshoots and is being moved from a Christmas 2012 release to a Summer 2013 date. After the movie trailer moved my interest in seeing the movie down a peg, this news moves it back up a peg. Which means, I suppose, that I am back to square one.