My book Postnaturalism has been out since July, but there was a slight delay with US distribution. Now, however, the book is officially available for order through Columbia University Press.
This is probably more important for university libraries, who might want to order directly from CUP (if your library doesn’t have a copy yet and you’re in any position to do so, please do consider requesting they order one). For everyone else, you can currently get a copy much cheaper through marketplace sellers on amazon.com (right now, around $38 for a new copy, rather than the $60 list price at CUP).
Finally, a preview of the book has gone up at Google Books. Check it out here.