It appears that Bethesda and id Software are preparing a new DLC or add-on for RAGE, as the publisher has registered Rage: The Scorchers with PEGI for PS3, X360 and PC. According to the registration, Rage: The Scorchers will allow players to interact with other players online and will contain extreme violence and strong language. We expect Bethesda to announce this DLC/add-on pretty soon, as they hinted about it back in March.
John Carmack has also revealed that they will be releasing those promised mod tools pretty soon and apologised for taking so long to finalize/complete them.
Stay tuned for more!