Like an infected member of the undead clawing its way up a mound of zombies and over a giant wall, a sequel to World War Z has scaled the confines of development and secured an official release date. THR says that the Brad Pitt-starring zombie sequel will arrive on June 9th, 2017, which is the same date that 20th Century Fox has scheduled Fantastic Four 2.
Since both of those movies are theoretically going after much of the same audience, one of them will likely shift release dates, and if I had to put money on it, I'd guess that Fantastic Four 2 would be the one to blink in this scenario. I don't want to rely too much on unconfirmed rumors, but the general sentiment about the production of Josh Trank's Fantastic Four reboot has not been overly positive, which arguably contributed to him leaving the Star Wars spin-off he was supposed to direct. I wouldn't be at all surprised if Fox didn't want to work with him on a sequel, but we'll have to see how that scenario plays out. Maybe those rumors aren't true, and they'll be thrilled to entrust him with a hundred-million-dollar-plus franchise again. Time will tell.
As far as World War Z 2 goes, Eastern Promises writer Steven Knight is writing the screenplay, while Juan Antonio Bayona is directing. Pitt is returning to star, and we'll keep you posted with additional casting info as it becomes available.