I guess the book is now officially released. Although Amazon has been filling pre-orders for almost a week now, the official press release didn't go out until yesterday, whichi s about the time that Amazon changed from "Usually ships in 4-7 weeks" to "In Stock".
Our Amazon rank jumped below #500 overall today. It probably won't stay down there - this is a niche book after all - but it feels good to see it even get to visit down there, not to mention seeing it be the #1 book in three categories to boot. I know these numbers are transient, but it does the ego good.
The official Book Website is live now, as are support forums where you can ask questions, get help, and find errata.