Apple recently revealed two new accessories that will debut with the iPhone 3G on July 11th. The first product shown was the iPhone 3G Dock, which offers charging via USB, syncing to your computer, and audio out as well.  The iPhone 3G Dock also has the ability to use the iPhone in speakerphone mode while docked.

They also showed the new Apple USB Power Adapter, which reduces the size of the original iPhone and iPod chargers down to a small white adapter.

The iPhone 3G Dock will no longer be included with the purchase of an iPhone 3G, so it will need to be purchased separately from the iPhone for suggested retail price $29. The Apple USB Power Adapter will continue to be included in the iPhone 3G package, and retail for $29 if you need a replacement or spare.