Alleged photos of the parts of the upcoming iPhones surfaced online and sources say that the next generation of Apple's iPhone will be released later this year.

Purported images of the next-generation "iPhone 5S" and "iPhone 6" parts were published on a French gadget blog. Nowhereelse.fr, which has published images of genuine parts from unreleased Apple devices in the past, recently published a pair of photos that it claims show internal speaker enclosures destined for two different upcoming iPhone models.

The origin of the photos was not indicated. He also notes that the names "iPhone 5S" and "iPhone 6″ are being used as placeholders, and the site does not claim knowledge of Apple's naming scheme for its next-generation iPhone models.

Apple CEO Tim Cook hinted that the upcoming smartphone tagged as iPhone 6 or iPhone 5S at the Apple Q1 2013 earnings call. Tim Cook also assured investors that Apple picked the right screen size when upgrading to a 4-inch Retina Display. He also carefully dodged talking about the rumours towards the next iPhone. However, this suggests that Apple will stick with its old screen size.

iPhone 5 sports a 4-inch Retina display, which is the most advanced display in the industry and no one comes close to matching the level of quality as the Retina display. This also provided a larger screen size for iPhone customers while considering the comfort of users.

Cook's insisting that 4-inch screen is better for one-handed use and larger screens will only make it more difficult. He also aimed at appeasing developers who would need to accommodate yet another screen size if Apple made a larger iPhone 5S or iPhone 6. Apple sticking with its 4-inch screen may make it fall behind the competition since Android smartphones are sporting larger screen displays.

Other rumoured features of the next iPhone are super HD camera, massive internal storage of 128GB, Near Field Communication, a better battery and IGZO screen display.

The iPhone 6 may also become smarter and more secured with the aid of a fingerprint sensor. The rumour is included in note of KGI Securities analyst Ming-Chi Kuo, who has a superb track record in iPhone rumours. The rumour is backed by the fact that Apple bought AuthenTec in 2012. They were well known for their fingerprint scanning technology.