2.2 Adds the following features:

* Enhancements to Maps
o Google Street View*
o Public transit and walking directions
o Display address of dropped pins
o Share location via email
* Decrease in call setup failures and dropped calls

* Enhancements to Mail
o Resolved isolated issues with scheduled fetching of email
o Improved formatting of wide HTML email
* Podcasts are now available for download in iTunes application (over Wi-Fi and cellular network)

* Improved stability and performance of Safari
* Improved sound quality of Visual Voicemail messages
* Pressing Home button from any Home screen displays the first Home screen
* Preference to turn on/off auto-correction in Keyboard Settings

For details on the features, head on over to http://www.apple.com/iphone/softwareupdate/.

One note — if you have a jailbroken phone, don’t apply this update yet. Wait for those crazy kids to update QuickPwn/WinPwn or whatever you use to work with 2.2. If history holds it will only be a few hours.