Nate the greatest writes "Got a Kindle Fire? Here's your chance to try the new Kindle Format 8. The new format is in beta testing right now with a limited number of publishers, and a few days ago one of those publishers leaked the tools and the guidelines to me. It turns out KF8 isn't all that new. I've looked at the code, and I'd call it an attempt to graft a number of Epub features onto the existing Kindle format. It simply adds a lot of new formatting and is only slightly more capable than Epub. There's a number of screenshots at the link as well as a demo file. You can probably also find more KF8 ebooks in the Kindle Store; look for the Kindle Fire exclusive magazines and graphic novels."