You can order it from Subterranean Books in the US and PS Publishing in the UK, though Subterranean has a limited number of copies. You can always order from PS direct, no matter where you live.
We're also really looking for reviewers for the collection, since I haven't seen anyone talking about it yet. If you need a review PDF, contact me. (The Habitation of the Blessed could use some review love, too, of course.)
But mostly I want you guys to be able to read and love this thing, for it is six years of my short fiction babies, in the most beautiful package for serious.