Rumour mills have for long speculating on the launch of the alleged iPhone 5S. Now, a news report also claims to have got the launch date of the much-awaited smartphone, the follow up to Apple's current flagship iPhone 5. 

French website Nowhereelse.fr, which has a decent record of leaks surrounding Apple products, has released the image of an internal document of Japanese telecom operator KDDI. This document states that iPhone 5S will be announced on June 20 and hit the stores in July. The document also calls the device iPhone 5S, giving credence to speculation saying that the phone will not be named iPhone 6. 

This internal document states that the device will get an upgraded 13MP camera, as compared to the 8MP unit used in its predecessor. The phone will run on iOS 7, it states. 

Previously, a Chinese website leaked the first photos of iPhone 5S under production. KGI Securities analyst Ming-Chi Kuo, citing supply chain sources, said the upcoming smartphone will feature a 13MP camera, snappier processor, fingerprint recognition sensor and more powerful LED flash. Various analysts, including Kuo, Jeremy Horwitz of iLounge, Piper Jaffray's Gene Munster and Peter Misek of Jeffries, expect Apple to launch the device in the third quarter of 2013.