Rage is shortly receiving new DLC over a year after release, if a trophies listing is accurate. PS3Trophies.org reports ten new trophies are being added to id Software's shooter, five of them based around a new job path called 'The Scorchers.' Another trophy is for finishing the campaign on 'Ultra Nightmare difficulty,' suggesting the DLC includes a new difficulty level even tougher than plain ol' Nightmare setting.
The trophies are backed up by a PEGI listing from earlier this year for 'Rage: The Scorchers,' content rated for Xbox 360, PS3, and PC. id Software founder John Carmack has also said mod tools which were supposed to ship with Rage were coming to the game "soon." It's just speculation, but if the DLC is accurate it may coincide with their release.
We've reached out to Bethesda for confirmation of the DLC.