Apple has got the Christmas season off to an early start by announcing the deadlines for authors to upload ebooks to iBooks.
You’ll need to upload your ebook by Monday, December 11 if you want the title to be released on iBooks during December 17-31.
Friday, December 15 is the cut-off point for books to be released between January 1-8, 2018.
Books submitted after these deadlines may not be available on the desired release date.
Due to the high volume of deliveries and updates during the Christmas and New Year period, iBooks does not recommend making content changes between December 21, 2017 and December 28, 2017.
You can get more details at iBooks Resources or reach out to our iBooks Publisher Support team using Contact Us.