iOS 5 includes new features:
- Notification Center
- Twitter integration
- iCloud support
The best way to download this update is installing it over-the-air (OTA) from the device itself, simply head to Settings > General > Software Update. In few minutes, iOS 5 Beta 7 should be loaded onto your device.
Apple has also released iTunes 10.5 beta 7, Xcode 4.2 beta 7 and Safari 5.1.1 update 3.