Vin Diesel announced that there will be a new movie sequel to the Chronicles of Riddick! The official title of Riddick 3 hasn't been announced yet, but Vin Diesel did give a few plot details of Riddick 3:
David Twohy is scripting the next installment of Riddick as we speak, and it's underway. The story will return to a Pitch Black [sensibility] while servicing the mythology that's been enhanced in Chronicles of Riddick."
Sounds like a great premise, but I kind of wonder why Riddick would have left the Necromonger throne...
Vin Diesel also released those concept arts on his Facebook page:
Those concept-arts of Riddick 3 look promising.
David Twohy (who wrote and directed the first two films in the series, Pitch Black and The Chronicles of Riddick) will helm Riddick 3 based on a script he wrote. Let's hope they will really deliver a great sci-fi action movie!