Another Fallout 3 DLC Hint?

No Mutants Allowed has some fuel for the fires of speculation over the possibility that a fourth batch of DLC for Fallout 3 is in the works, which has been hinted at by an online listing, and has not been ruled out by Bethesda Softworks. Using the Fallout 3 G.E.C.K. scripting tool, they have uncovered a reference in the Broken Steel DLC specifically referencing a fourth DLC, as it is called: "DLC04RelayStatBackdoorUnlockSCRIPT."