Vivendi Universal Games sends along this press release about the release of The Chronicles of Riddick: Escape From Butcher Bay - Developer's Cut on the PC. Scheduled for a December release, the $29.99 PC version will add exclusive content "in the form of a mech for players to control, as well as a new arena where players can test their survival skills against some of the most hardened criminals in the galaxy". You can find some screenshots here.