An ongoing TV series about a zombie apocalypse and its survivors? HAS THIS EVER BEEN DONE BEFORE?
GTFO, Dead Set was basically a serialised film.
Based on the crazy-popular long-running comic book by Robert Kirkman, Frank Darabont (director of The Shawshank Redemption, The Green Mile & The Mist) will be showrunner, but Dalek can correct me if I'm wrong there.
The Walking Dead was greenlit for a six-episode first season by AMC, to start airing in October.