American outlets you can order it from, although we're still trying to resolve a glitch at Amazon. Amazon U.K. has it listed just fine... buuuut it doesn't officially come out in the U.K. until December. (Amazon Japan, on the other hand, has it now!)
Anyway, we've been sending it out to people we respect in this industry, and we've gotten mentions from Topless Robot, Agent_M, Michael Crawford, I Heart Chaos, and ToyFare magazine! Plus, Spectrum has done a full flip-through that will give you a thumbnail view of the whole shebang:
But the big news is that, to tie in to the release of the book, Tim and I will be acting as judges in the Comiquette Challenge sculpting competition at Conceptart.org! It's a comic book-centric challenge, open to sculptors of any age and skill level, and the prizes are signed copies of Pop Sculpture! Sign up now and start sculpting! Unless you need the book to do that, in which case buy the book, start sculpting, win another copy and give it to a friend! It's just that easy!