Well, the new weekly numbers for the Americas were just published reafirming continued 2:1 sales ratio of the 360 over the PS3. As predicted, the trends exhibited in October have carried over into November.
Prediction made on 11/1/2008:
Q4 2008: 27M xbox LTD, 20M PS3 LTD . 2009 sales: 11M xbox, 9M PS3