Apple have just released firmware version 2.2 for the iPhone.
Updates include:
This update contains many bug fixes and improvements, including the following:
• 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 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
More info @ Apple