- Adds support for syncing textbooks with iBooks 2.

- No data.

- Adds support for iTunes Match.

- iTunes in the Cloud. iTunes now stores your music and TV purchases in iCloud and makes them available on your devices anywhere, any time, at no additional cost.
- Automatic Downloads. Purchase music from any device or computer and automatically download a copy to your Mac and iOS devices.
- Download Previous Purchases. Download your past music, TV, app, and book purchases again, at no additional cost. Previous purchases may be unavailable if they are no longer on the iTunes Store.
- Sync with your iPhone, iPad, or iPod touch with iOS 5.
- Wi-Fi Syncing. Automatically sync your iPhone, iPad, or iPod touch with iTunes any time they're both on the same Wi-Fi network.

- Fixed Bugs.

- Fixed Bugs.

- Fixed Bugs.

- Fixed Bugs.

- Automatic Downloads. Purchase music from any device or computer and automatically download a copy to your Mac and iOS devices.
- Download Previous Purchases. Download your past music purchases again at no additional cost.
- Support for iCloud service.

- No data.

- Fixed Bugs.

- No data.

- Sync with your iPhone, iPad, or iPod touch with iOS 4.3.
- Improved Home Sharing. Browse and play from your iTunes libraries with Home Sharing on any iPhone, iPad, or iPod touch with iOS 4.3.

- Important stability and performance improvements.

- Fixed Bugs.

- Use AirPlay to instantly and wirelessly stream videos from iTunes to the all-new Apple TV.
- Sync with your iPhone, iPad, or iPod touch with iOS 4.2.
- Provides a number of important stability and performance improvements.

- No data.

- Adds new social networking layer named "Ping".
- Adds support for iPod shuffle 4G, iPod nano 6G, iPod touch 4G, and Apple TV (late 2010).
- Renamed AirTunes to AirPlay.
- Adds visual improvements to list view.
- Improves performance.
- Adds additional support for VoiceOver Kit for iPod.
- Changes application icon.

- Disables older versions of some incompatible third-party plug-ins.
- Addresses minor issues with dragging and dropping items.
- Addresses other issues that improve stability and performance.

- Sync with iPhone 4 to enjoy your favorite music, movies, TV shows, books and more on-the-go.
- Sync and read books with iPhone or iPod touch with iOS 4 and iBooks 1.1.
- Organize and sync PDF documents as books. Read PDFs with iBooks 1.1 on iPad and any iPhone or iPod touch with iOS 4.
- Organize your apps on your iOS 4 home screens into folders using iTunes.
- Faster back-ups while syncing an iPhone or iPod touch with iOS 4.
- Album artwork improvements make artwork appear more quickly when exploring your library.