The long awaited iPhone firmware version 2.2 has appeared in iTunes. You can install it now by clicking the “Check for Update” button in your iPhone Summary panel. The iPhone 2.2 update includes:

- Google Street View in Google Maps
- Public Transit and Walking directions in Google Maps
- Display the address of a place when you drop a pin
- Share your location via email
- A fix for a scheduled fetching of email bug
- Improved stability and performance of Safari
- Podcasts can be downloaded right to the iPhone over WiFi or 3G
- A decrease in call failures/dropped calls
- Improved sound quality of visual voicemail messages
- The ability to return to the main home iPhone screen with the click of the home button
- The ability to turn on and off the keyboard auto-correction feature

Also, Apple has released iTunes 8.02. The update is available in your Mac OS X software update.

iTunes 8.0.2 improves stability and performance and provides a number of important bug fixes, including:

- Addresses a quality issue creating MP3s on some computers.
- Fixes a connectivity issue with the iTunes Store when using some Internet proxies with Mac OS X.
- Improves accessibility with VoiceOver.

[Information provided via MacRumors and VentureBeat]

UPDATE: iPhone 2.2 firmware update is successful for me as of 11:03 PM PST. Pictures of the process have been posted on my Flickr account here.