Breaking news on the Marvel Cinematic Universe front is that while an Inhumans movie is still likely I wouldn’t hold your breath.
Disney officially removed it from the schedule several hours ago and now new proposed date has been given. It was to be released July 12 2019.
Since there is a completed script it’s not the death of the movie entirely just a big delay for it. Not surprising really as Marvel chief Kevin Feige alluded to a delay for it recently. Now it’s official. Kind of a shame as Agents Of S.H.I.E.L.D. had been doing a good job of introducing the concept of them to the greater universe.