(no spoilers)
Watched it today, and gotta say, it was pretty good. Brad Pitt and his wavy hair both acted really well. I really love the "zombie swarm" idea.
I read a review beforehand, though, stating that "World War Z would have been much better if it wasn't a zombie movie". I completely agree. If it was more of a disaster movie, instead of having the weak, cliche zombie scares, I think it would've been much better (kinda like the Purge in that regard. I thought the Purge concept would've made a great disaster movie).
It was enjoyable, though. A solid 8/10 in my book. Pacing was great, and they jumped right into the zombie action. If you could only watch a limited amount of summer movies, make this one of them.