The film is speculated to be the final Riddick movie.
Katee Sackhoff is expected to reprise her role as Dahl from Riddick (2013) for this film.
Given its particular plot, it could follow the same formula as The Chronicles of Riddick (2004) as more action/adventure oriented rather than horror oriented like Pitch Black (2000) and Riddick (2013)
While not too much is yet known about the sequel, it has been revealed that the project will be titled Riddick 4: Furya, and, according to Diesel himself, the storyline will delve into the mysterious origins of the highly skilled Furyan fugitive.
In "Riddick", It is spelt Furya. This is when Boss Johns takes a couple of guys to the tunnel system Riddick was using as his shelter.