Official change-log:
- Japanese language support for Siri (availability may be limited during initial rollout)
- Photos can now be deleted from Photo Stream
- Camera shortcut now always visible on Lock Screen for iPhone 4S, iPhone 4, iPhone 3GS and iPod touch (4th generation)
- Camera face detection now highlights all detected faces
- Redesigned Camera app for iPad
- Genius Mixes and Genius playlists for iTunes Match subscribers
- Audio for TV programs and films on iPad optimized to sound louder and clearer
- Podcast controls for playback speed and a 30-second rewind for iPad
- Addresses bugs affecting battery life
- Fixes and issue that occasionally caused audio to drop for outgoing calls
Here are the official download links to iOS 5.1 directly from Apple:
- iPhone 4S
- iPhone 4 (GSM)
- iPhone 4 (CDMA)
- iPhone 3GS
- iPad 3 WiFi
- iPad 3 GSM
- iPad 3 CDMA
- iPad 2 WiFi
- iPad 2 GSM
- iPad 2 CDMA
- iPad
- iPod touch 3G
- iPod touch 4G
- Apple TV 2G (5.0)
- Apple TV 3G (5.0)
