- Google Street View
- public transit and walking directions
- display address of dropped pins
- share location via email
- resolved isolated issues with scheduled fetching of email
- improved formatting of wide email messages
Improved stability and performance of Safari
Podcasts are now available for download in iTunes application (over Wi-Fi and cellular network)
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
Preference to turn on/off auto-correction in Keyboard Settings
Update your iPhone or iPhone 3G or iPod touch via iTunes Update.
More info about the security content of iPhone OS 2.2 and iPhone OS for iPod touch 2.2 here.