Gee if I knew the answer I'd already be rich.
My guess is that most of the short term PM bump from this QE announcement is in. The wild card is, as always, our fellow humans. How many will wake up to the need to buy PMs for protection based on this particular announcement? How many who have been sitting on the sidelines waiting for a downturn in PM prices will capitulate? How many will conclude that there has been an overshoot in PM prices and will go short?
Most of us, hopefully, have already placed our bets on QE to infinity and are just watching this all play out.
I must be willing to give up what I am in order to become what I will be. Albert Einstein