1.Enhancements to Maps
  1.Google Street View*
  2.Public transit and walking directions
  3.Display address of dropped pins
  4.Share location via email
  5.Decrease in call setup failures and dropped calls
1.Enhancements to Mail
  1.Resolved isolated issues with scheduled fetching
    of email
  2.Improved formatting of wide HTML email
  3.Podcasts are now available for download in iTunes
    application (over Wi-Fi and cellular network)
1.Improved stability and performance of Safari
2.Improved sound quality of Visual Voicemail
  messages
3.Pressing Home button from any Home screen displays
  the first Home screen
4.Preference to turn on/off auto-correction in
  Keyboard Settings

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Sandman[.net]
http://mac.sandman.net/pages/Iphone_22_Firmware