While Mantic posts their rules for free online, there's no "bells and whistles" to what you get in that free packet. For those that like the extra fluff about the various races and units, there's the full Digital Edition of the rulebook. Pre-orders for those have begun over on the Mantic site.
This electronic version is fully interact. There's a glossary that's easy to search through. So if you've got a question during a game, there's not seemingly hours of flipping through a book. The version will be available for most digital devices, including Apple, Android, Nook, and Kindle. It will be kept up-to-date with the changing FAQ and Errata. Plus, there will be items available only in this digital version of the book.
Pre-orders are up now. The ebook will be released Aug. 21st.