Apple today emailed out registered authors for iBooks to announce some interesting changes and enhancements to the program. Some notable enhancements, via Apple’s email:

To help you get your book to readers quickly, we review 95 percent of all book submissions within one business day. Note that you do not need an ISBN to deliver a book to iBooks.

You can now request up to 250 promo codes per book. Promo codes allow you to provide free copies of your book to reviewers, bloggers, or others to build momentum for your book.

Screenshots can now be delivered or updated after a book is available for sale on iBooks.

The email to authors also tells developers about recent updates to both the iTunes Connect app on iOS and the iBooks Author application on the Mac. Like it usually does for App Store app developers, Apple tells authors how to prepare for the upcoming break for book reviewers. “To account for an anticipated increase in book deliveries during the U.S. Thanksgiving holiday week, books scheduled to go live between November 24, 2014 and December 1, 2014, should be delivered by Friday, November 14, 2014,” the notice reads.

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