More concept art has surfaced for Riddick, the third film in the series that is trying to get off of the ground. This pic, courtesy of Vin Diesel's Facebook page, depicts Riddick traversing the "Badlands" with his pet. Look at the date on the art, it's fairly recent.
Last we heard about the project, writer-director David Twohy informed fans that Diesel had to take a pay cut to make the project happened. The actor had to make a decision... We still don't know what he has planned.