https://techcrunch.com/2018/09/17/apple-ibooks-revamp-apple-books-is-here/

Apple’s new and improved iBooks app, now called Apple Books, has popped up on iPhones across the world today with the release of iOS 12, the software update available to download as of this morning.

The new app has five tabs: Reading Now, Library, Book Store, Search and, for the first time, a dedicated Audiobooks tab.