Here's the release notes including some changes to iBooks...
Apple Music
- Become an Apple Music member to play from millions of songs in the Apple Music catalog, or keep them offline for playback later
- For You: Members can see playlist and album recommendations, handpicked by music experts
- New: Members can find the latest, greatest new music available – direct from our editors
- Radio: Tune in to music, interviews, and exclusive radio shows on Beats 1, play radio stations created by our editors or create your own from any artist or song
- Connect: See shared thoughts, photos, music, and videos from artists you follow, then join the conversation
- My Music: Play from all of your iTunes purchases, songs from Apple Music, and playlists in one place
- Completely redesigned music player that includes new features such as Recently Added, MiniPlayer, Up Next, and more
- iTunes Store: Still the best place to buy your favorite music—one song or album at a time.
- Availability and features may vary by country
iBooks improvements and fixes
- Browse, listen and download audiobooks from inside iBooks
- Enjoy the all-new Now Playing feature, designed specifically for audiobooks
- Books that are Made for iBooks now work on iPhone in addition to iPad
- Find and pre-order books in a series right from your library
- Improves accessibility of widgets, glossary and navigation in books made with iBooks Author
- New default Chinese font
- New setting to turn off Auto-Night theme in your library
- Resolves an issue that may have prevented Hide Purchases from working
- Resolves an issue that may have prevented downloading books from iCloud
Other improvements and bug fixes- Fixes an issue where receiving a specific series of Unicode characters causes device to reboot
- Fixes an issue that prevented GPS accessories from providing location data
- Fixes an issue where deleted Apple Watch apps could re-install