The latest in the iPhone 6 rumor directory is a set of new pictures showing the mock-up of the iPhone 6 model ahead of its supposed debut in September.

Apple, the second largest smartphone maker in the world, is tight-lipped about its next iPhone model, but rumors surrounding the iPhone 6 haven't stopped coming in. In the latest development in the iPhone 6 story, popular Australian blogger, Sonny Dickson, posted new photos of the alleged iPhone with two different screen sizes.

If the new pictures are genuine then they confirm the long-held rumor about Apple launching two iPhone 6 models with different screen sizes.

Several media reports have widely reported that Apple has been working on 4.7-inch and 5.5-inch displays for the successor of iPhone 5S. Though it was expected that the Cupertino giant  might shed some light on the new device during the WWDC conference, sadly iPhone fans were left disappointed. Instead, the company showcased the new OS X Yosemite for Macs and iOS8 for iPhones and iPads. But new rumors have been circulating that indicate the next iPhone will arrive in September, Japanese daily Nikkei reported. But Apple is yet to confirm any details on the rumored talks on both iPhone 6 and iWatch.

The new photos of the alleged iPhone 6 bear greater significance, given the reliability of the source. Dickson posted the authentic photos of the iPhone 5S last year, even before the flagship hit the store shelves. The new photos show the  iPhone in 4.7-inches and 5.5-inches  in gold finish.

Hello! #iPhone6 pic.twitter.com/EGtu86HCnk

- Sonny Dickson (@SonnyDickson) June 14, 2014

Other details such as a touch ID fingerprint reader and side power button, relocated from its top position, appear in the picture as rumored earlier. Ubergizmo also pointed out that the images showing the rear of the iPhone lacked the true tone flash, which was debuted in iPhone 5S.

The blogger did not reveal any other notable changes. Until Apple comes forward with an announcement, these rumors can only be taken with a pinch of salt.