He is just putting the finishing touches to the manuscript, which has to be delivered before Christmas. Publication is autumn 2013. There’s no title as yet and Boyd is tight-lipped about plot details.
Hopefully we'll start getting some details in the new year. There hasn't been much news on the Boyd book yet -- certainly less than there was on the last Bond novel by Jeffery Deaver at this same time (remember the whole "Project X" tease?).
William Boyd's new Bond novel will be published by Jonathan Cape in the UK and HarperCollins in the U.S and Canada.