This is the book that I collaborated on with Enrico Toro that was published last year by Eric Flint's Ring of Fire Press. The publisher recently replaced the original cover art with new artwork, and reworked the content by improving the copy-editing and cleaning up the pagination so that the section and chapter pages all align correctly.
There's been no real change to the stories themselves. It's just a cleaner, better, more professional production this time around. So if you have read it, liked it, and want the corrected version, have at it. If you haven't read it, it's waiting for you to buy it at the usual suspects.