The Federal Reserve releases an accounting of its Balance Sheet every Thursday. The Fed's Balance Sheet has tripled in the past four years - although it has been stable for the past 12 months. Most of the Fed's Balance Sheet is now Treasury Securities or Agency Guaranteed Securities (Both Mortgage Backed Securities ie.MBS and Straight Debentures).
It should be interesting to say the least. I think the Fed is waiting for more clarity on the Tax & Spending policies of the next Congress and President before clarifying how they will remove the massive amounts of monetary stimulus.