If you missed getting in your Nook pre-order there's still hope to nab the dual-display Barnes & Noble reader in time for the holidays. A Wall Street Journal piece says that Nook will be "available for sale or for demonstration purposes" in select, high-volume B&N stores starting December 7th -- a week later than expected as B&N tries to fulfill unexpectedly high consumer demand following the ereader's October 20th announcement. Of course, it's impossible to say if the sell-out translates to high sales or just poor planning on B&N's part as it dips a tentative toe into the fickle wa