iOS5.1 has been released... plug in your device (or use WiFi) and let the big Apple take care of the uprade for you.



According to the release note of iOS 5.1, the new version of iOS comes with the following features and bug fixes:

- Japanese language support for Siri (limited availability during initial period)
- Photos can now be deleted from Photo Stream
- Improved camera shortcut – the shortcut is now always visible on Lock Screen
- Camera face detection with highlights of all detected faces
- Redesigned Camera app for iPad
- Genius Mixes and Genius playlists for iTunes Match subscribers
- Audio for TV shows and movies on iPad optimized to sound louder and clearer
- Podcast controls for playback speed and a 30 second rewind for iPad
- Updated AT&T network indicator
- Addresses bugs affecting battery life
- Fixes a bug that occasionally caused audio to drop for outgoing calls

You can update your iOS via iTunes or right on your device using the Software Update.