Saw it tonight. It was fun. Not overly memorable, but I wouldn't call it a bad movie by any stretch. Just a fun action movie.
I'm not familiar with the book at all, so I have no idea how true it is to the source material. I've read a lot of book fans saying the movie looked awful and were pissed off by the look of the zombies, but as a guy who never read the books, I had fun with the movie.
Pleasantly surprised as I didn't think the trailer looked great, but again, far from a great movie.
Haters of shaky cam will get pissed off though. There's quite a bit going on especially during the in your face zombie scenes, which are plentiful in this flick.
6.5/10 is fair I think and currently sitting with some pretty positive critic reviews.