KF8, which will roll out to Amazon's latest generation e-readers and reading apps in the next few months, provides publishers the ability to develop digital publications that require rich formatting and design functionality. The file format will be an ideal fit for children's books, comics and graphic novels, cookbooks and even technical and engineering books.
The KF8 format adds around 150 new formatting capabilities including fixed layouts, nested tables, callouts, sidebars, Scalable Vector Graphics (SCG) and much more. A list of the most important enhancements in KF8 can be found here.
Amazon's Kindle Publisher Tools (including KindleGen 2 and Kindle previewer 2) do not currently support KF8, but Amazon expects availability soon. Amazon noted that all currently supported content will continue to work - e.g. .mobi files. Information on how to update existing titles to take advantage of KF8 capabilities will be available in the upcoming update of the Kindle Publishing Guidelines.