Apple has seeded iPhone 2.2 Firmware Beta 2, and with it comes fully enabled Google Street View. There have been previous reports that Beta 1 of the iPhone 2.2 had hidden APIs relating to the Google Street View for Google Maps, but wasn’t enabled.
However Apple have seeded the iPhone 2.2 Firmware Beta 2 to their developers and the Google Street View is enabled, and furthermore, the seed notes indicate that Line in audio accessories are now supported within the SDK.
The guys over at iphoneyap have posted a pictorial gallery of the iPhone Beta 2 screen shots showing all the new features.