That's according to Japanese blog Mac Otakara, which reports that Apple appears to be headhunting employees from publications to build out an editorial team that would curate the content to appear in the Today tab of iBooks. Apple has posted a series of iBooks editor job listings on LinkedIn in recent months.
The rumor makes sense given Apple plans to redesign the iBooks app with a similar layout as the App Store on iOS 11, according to Bloomberg's Mark Gurman. The new App Store features a Today section of its own that highlights apps, games, developers, sales, and other app-related content on a daily basis.
iBooks currently has five tabs: My Books, Featured, Top Charts, Search, and Purchased. Once the app is redesigned, it's reasonable to assume the tabs could become something like Today, Reading, Books, Audio, and Search.
Apple renamed the iBooks app to Books in the first iOS 11.3 beta, but the name was reverted to iBooks in the fourth beta and remains that way. Perhaps we'll see the simpler Books name return when iOS 12 is released. The software update should be previewed and enter beta testing at WWDC 2018 in early June.