Yep, I'm interested. Kinda weird considering I neither like FPS games or zombies in particular. Open world sounds good though, combined with survival gameplay it should be interesting, in theory at least.
Trailer is excellent... until the facebook link at the very end. That completely killed the mood for me, for some reason.
(same stuff basically:
http://www.rockpapershotgun.com/2011...t-dead-island/)