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Here are a few of the 200+ new features for your iPad, iPod Touch, or iPhone. Most notable is the PC free feature wherein you can back up and restore your device automatically through iCloud. This would most probably be in response when Apple was ridiculed as Steve Jobs said during the unveiling of the iPad2 that it was designed for the post-PC world.

Notification Center – All your alerts. All in one place

iMessage – iPad and iPod touch join the conversation

Newsstand – A custom newsstand for all your subscriptions

Reminders – A better way to do to-dos

Twitter – Integrated right into iOS 5

Camera – Capture the moment at a moment’s notice

Photos – Enhanced photo enhancements

Safari – Even better site-seeing

PC Free – Independence for all iOS devices

Mail

Calendar

Game Center

Wi-Fi Sync

Multitasking gestures for iPad

Airplay mirroring for iPad2

Accessibility

Read more: http://www.apple.com/ios/ios5/features.html