iBooks v1.5 app update is pushed through App Store which is compatible with iPhone, iPad and iPod touch running over iOS 4.2 or later.
Check also:
How to Sync iBooks Bookmarks to iPhone, iPod Touch and iPad
How to Add PDF Files to iBooks with Dropbox
iBooks 1.5 Updates
- Nighttime reading theme makes reading books in the dark easier on the eyes
- Full-screen layout lets you focus on the words without distraction
- iBooks now features an improved selection of fonts, including Athelas, Charter, Iowan, and Seravek
- Beautiful new classic covers for public domain books
- A redesigned annotation palette makes it easier to choose a color for your highlighted text
You can download iBooks v1.5 for iPhone, iPad and iPod touch through following iTunes link.
Download iBooks v1.5 for iOS