I received the specs for the spine from Image Comics which was the last bit of information I needed in order to complete the digital files for the printer - One step closer to the published book.
I'm so glad Kazu encouraged me to make Rex a part of Flight, back in 2004 at Long Beach Wizard Con. It's been rewarding to see the book taking shape year after year!
The Saga of Rex is 200 pages, 7" x 10", full color and you can pre-order it from Amazon.com for $12.23. That's quite a deal!
I've recently updated the webpage for the book with previews of all the chapters. Check it out.