I completely forgot to post about this, but book 3 now has an official title: Master of the House of Darts (yes, I know. It looks kind of the old unsuitable title, but after thinking it over AR feel that the coolness of it offsets the, er, sheer length of the thing). Release date: November 2011.
I’m currently around 75% of the way in, entering the big ugly climax with a ton of dangling plot threads. The H assures me this is business as usual