More good news! In addition to being available through Lulu (the book's printing company), Pleiades is also available through Amazon.
Kickstarter backers, you'll still get your copy before anyone else. The bulk print order has already been shipped from Lulu and should be here in approximately two more days. Once they arrive here, they'll promptly be autographed and shipped out to you. I'll also be sending out prints of the book's illustrations, which sadly could not be incorporated into the book's final revision.
Pleiades is also available as an eBook through Smashwords.