Production History as of September 13, 2015
Christopher Yost will do a rewrite on the script. Last announced in April 2014.
Jeff Wadlow has come aboard to rewrite the script.
Terry Rossio, the co-writer of The Lone Ranger, has been tapped to work on the script.
The Expendables 2 co-writer Richard Wenk has signed on to re-write the screenplay; rewrite of script by Alex Litvak and Mike Finch.