This is old news but I'm so out of the loop that it's news to me. There's going to be a third Pitch Black movie. I'm very much looking forward to it, after being a bit disappointed with the second. As a standalone the Chronicles of Riddick worked pretty well, but it was so different in concept and feel from the first that it didn't fit at all. Pitch Black was a low-key near-future character movie with a low-tech feel - a band of crash survivors on a barren planet facing monsters that come out in the dark (including, perhaps, Riddick himself). The second movie had a sweeping saga feel with an evil galactic ruler, high-teck ships, "magic" and mythology... a grand universe that was not even hinted at in the first movie. Only the prison scenes felt like they belonged.
David Twohy, director of Pitch Black, is back for the third installment - I hope that's a good omen. Vin Diesel posted concept art on his Facebook page where the monsters look somewhat like dogs (shades of Alien 3?)