Those wondering if Army of Thieves will have any similarities with Army of the Dead will be glad to hear that not only were both movies written by Shay Hatten (who also wrote the upcoming John Wick: Chapter 4) they were both based on stories developed by Hatten and Zack Snyder, who also produces the prequel.
Prior to his involvement with the Army of the Dead extended universe, Shay Hatten helped expand the John Wick universe with John Wick: Chapter 3 – Parabellum.
Hatten also wrote the upcoming Netflix anime series Army of the Dead: Lost Vegas, which will fill in the story about Scott Ward’s crew leading up to the events of Army of the Dead.
He also wrote Maximum King!, a script that focuses on Stephen King during the production of his first and only directorial effort, Maximum Overdrive, per The Hollywood Reporter.