The first is that over at his blog Nate is conducting a giveaway of four copies of The Chestnut King that you could actually have in your possession prior to Christmas. But the entry deadline is like, today, or something. You can enter that drawing here.
Secondly, Canon Press is taking preorders for the book now. If you preorder, they will send you a signed bookplate that you can put under the tree. After that, when the book is released, it will be shipped to you. Getting the autographed bookplate into the actual book is left up to you.
And third, a book trailer has been released which you can view below.