Despite Fox's initial insistence that the Fantastic Four sequel was moving forward despite the box office failure of the first film, Fox has now officially removed the Fantastic Four sequel from their release schedule.
Fantastic Four 2 was originally scheduled for a June 9, 2017 release date, even before the first film hit theaters. With virtually all superhero movies performing well at the box office recently, Fox probably felt confident at the time that Fantastic Four would follow suit. However, Fantastic Four wound up being the rare superhero movie flop. Fantastic Four only grossed $56 million domestically and $167 million worldwide on a production budget of $120 million.
It's unclear if Fox removing Fantastic Four 2 from their schedule means the film is indefinitely canceled or if it will be rescheduled for a later date to allow more time for Fox to plan a strategy for what comes next.