The official James Bond site http://www.jamesbond.com has today updated with details on road testing the new Aston Martin V12 Vanquish's.
There are too few details available on Bond 20 in the article (though Pierce Brosnan's knee injury is mentioned) to write up heaps about it here. However, Bond enthusiasts will of course want to read it!
Thanks to Scaramanga for tipping us off to the news! If you'd like to discuss it please do in this thread of the Bond 20 Forums.