MacRumors.com

Surprisingly, Apple has released the iPhone 2.2 firmware tonight shortly after midnight. The latest update is available in iTunes for existing iPhone and iPod touch owners. The update contains:

Enhancements to Maps
- Google Street View
- public transit and walking diretions
- display address of dropped pins
- share location via email
Enhancements to Mail
- resolved isolated issues with scheduled fetching of email
- improved formatting of wide HTML email
Improved stability and performance of Safari
Podcasts are now available for download in iTunes application (over Wi-Fi and cellular)
Decrease in call set-up failures and call drops
Improved sound quality of visual voicemail messages
Pressing the Home button from any Home screen takes you to the first Home screen
Preferences to turn on/off auto-correction in Keyboard settings

The update appears to deliver all of the expected features that we have detailed over the past several weeks. Other new findings include:

- App Store links in Mobile Safari correctly link directly to the App Store.
- Street view does not appear to be in the iPod Touch
- Tech note on downloading Podcasts in iPhone 2.2
- Netshare still works according to one user
- Emoji troubleshooting and Emoji technote for Japanese customers.
- Security changes found in 2.2.
- Transit directions screenshot
- How to invoke Street View on the iPhone

Update: List of new and undocumented 2.2 features