A leaked picture from KDDI documents show that pre-orders for the iPhone 5S will likely begin on June 20. Then will be officially launching in July.
In addition to the document leaked photos also reported that the iPhone 5S will be equipped with a 13 megapixel main camera.
As we mention before, Apple will release the new iPhone with improve the camera capabilities while the iPhone 5 features has 8-megapixel rear camera with an f2.4 aperture that was introduced with the iPhone 4S, but it has a sapphire crystal for improved clarity.[source]