Shockingly, Apple has released the iPhone 2.2 firmware in the middle of the night (yes, that’s a bit odd, but who knows with Apple).

The latest update is available in iTunes for existing iPhone owners. The update includes:
Enhancements to Maps
- Google Street View
- public transit and walking directions
- 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

Other new fixes not previously reported 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.

Some good things, and lots of stability and bug fixes. Solid so far, according to early reports.