At its annual music event Apple announced the new iPods, iTunes 9 and the firmware upgrade to the iPhone / iPod touch OS. Here are the key features of the firmware version 3.1 / 3.1.1

- Improved syncing for music, movies, TV shows, podcasts, and photos
- iTunes U content organization
- Redeem iTunes Gift Cards, codes, and certificates in the App Store
- Display available iTunes account credits in the App Store and iTunes Store
- Save video from Mail and MMS into Camera Roll

- Option to “Save as new clip” when trimming a video on iPhone 3GS
- Better iPhone 3G Wi-Fi performance when Bluetooth is turned on
- Remotely lock iPhone with a passcode via MobileMe
- Use Voice Control on iPhone 3GS with Bluetooth headsets
- Paste phone numbers into the keypad
- Option to use Home button to turn on accessibility features on iPhone 3GS
- Warn when visiting fraudulent websites in Safari (anti-phishing)
- Improved Exchange calendar syncing and invitation handling
- Fixes issue that cause some app icons to display incorrectly