"Originally released in early 2012, Apple’s education-themed ebook creation tool took bold steps as the first WYSIWYG program to export an ebook just as its author envisioned it. As I noted in my review of that software,http://www.macworld.com/article/1165172/ibooks_author_fashions_multimedia_books_for_the_ipad.html ; however, the first version of iBooks Author was very much a 1.0 product, with strange omissions and odd workflows for users who didn’t want to build textbooks. Ten months later, an updated version—iBooks Author 2.0 (Mac App Store http://itunes.apple.com/us/app/ibooks-author/id490152466 )—brings simplified tools, new templates, portrait-only options, and a better publishing workflow to the table. Naturally, I couldn't resist taking the updated program for a spin."
Via John Evans