Not a huge fan of the paperback art, but the hardcover is pretty nice. Both editions are available to pre-order from Chaos.com (which is an Aussie site, but has international shipping).
Not sure if these are the final versions, as they've been delayed to late October on amazon.com, and the covers differ from the images posted on TNC.com.
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Also, they're missing the “author's note” I included in the Q & A session with Bill in August