First of all, as previously mentioned, the novel is an Science Fiction Book Club alternate selection in October. I'm pretty pleased about that.
Second of all, I have been blessed to mention that the mass market edition, which will be out in May, 2008, will be that month's SF mass market lead for the Tor line. This means wider distribution and availability, and visibility for the book. If the hardback derives any significant recognition in the award cycle, that will be very timely to a May paperback release as well. In turn that will help the June release of Escapement in hardback.
I'm very stoked, and I'm very pleased to see Tor getting behind the book so well.