Feed Your Console says:
May 5th, Bethesda released the 3rd and probably not final expansion to the Fallout 3 universe in the form of Broken Steel but not without some minor challenges. As of the writing of this article, the DRM issue which plagued Games for Windows Live! has finally been corrected and is back up online while reports run rampant of buggy AI and a variety of other glitches. I'm not here to discuss that. Having just finished the latest chapter I need I will say that this is an extremely ambitious release.
Without giving away too much, Broken Steel picks 2 weeks after the original ending. The Brotherhood of Steel asks for your help in eradicating the last remnants of the Enclave.