Just had an email from Apple advising that they are no longer going to update iBooks Author. They have updated Pages to include features enabling the programme to write books which negates the need to have a separate App. There is a book import feature coming to Pages soon to allow importation of the files created under iBooks author with the .iba suffix. Apparently they are "excited about the future of book creation in Pages", but then Americans are easily excited about fairly mundane things.
I was excited, but not in a good way, when I saw that iBooks Author was to be discontinued. However, an import function in Pages should offer a better experience: IBA is a strange beast.
Rick, you're presumably a published author since I, as a mere user, didn't get an E-Mail?
Rick Churchill 