The movie is ostensibly based on the fictitious "Oral History of the Zombie War" by Max Brooks, author of The Zombie Survival Guide and son to comedy legend Mel Brooks.  Brooks' book was presented as the findings of a United Nations researcher who traveled the world compiling stories from survivors of the zombie pandemic that nearly wiped out humanity.  The researcher was just a device for presenting each of the varied stories in the voices of the characters who lived them.

Aside from the notion of zombies almost taking over the world, World War Z the movie doesn't seem to resemble World War Z the book too much. Instead of being a researcher compiling human data way after the zombie outbreak, here Brad Pitt stars as a UN researcher racing across the globe in a frantic attempt to find the source of the zombie disease and basically save the world, including his family.

This spot, clocking in at thirty-three seconds, is essentially an abbreviated version of the first teaser trailer, with Pitt and his family sitting in traffic that turns out to be a result of a zombie horde headed their way.  Then there are lots of the fast digital zombies that act like ants, moving as a giant hive organism, piling on top of one another.  There's a sprinkling of new stuff, including a glimpse as a perilous sequence in the skies, but mostly it's familiar.

If that definition isn't high enough for you, skip over to Apple, where the spot debuted, to check out in the highest of definition.

Obviously, Brad Pitt's the big name in this cast, but the cast also includes Mireille Enos, James Badge Dale, David Morse, and Matthew Fox.

Finding Neverland and The Kite Runner director Marc Forster is working well outside his comfort zone here, having previously attempting to bust blocks with Quantum of Solace, the not terribly well-received follow-up to Casino Royale. 

Following a reportedly rocky production, World War Z was delayed from Christmas to summer in order to facilitate seven full weeks of reshoots.  That additional photography required a full-blown rewrite of the film's last act, with Damon Lindelof coming aboard for ideas and The Cabin in the Woods director and co-writer Drew Goddard carrying out the actual writing.  The screenplay was initially written by Matthew Michael Carnahan, though earlier drafts were done by J. Michael Straczynski.

World War Z arrives in theaters on June 21st.