Rumors surrounding the release date suggest a fall launch, with production of the device set to begin in May, according to Reuters.
Sources close to the supply chain claim that 4.7 and 5.5 inches iPhones are in preparation.
Due to difficulties in the integration of “in-cell” technology on a screen measuring 5.5 inches, production of the phablet model has been delayed for several months, the report added.
Apple’s major supplier of displays, Japan Display, announced that they will start shipping a new 5.5-inch screen with a resolution of 1,440x 2,560 pixels this month.
Paul Semenza, senior vice president at NPD DisplaySearch expects the display produced by Japan Display to be incorporated in the iPhone 6.
Leaked photos that are claimed to have been taken at Foxconn, Apple’s main iPhone supplier, were posted on Chinese site Weibo.
The images apparently show the iPhone 6 in production, with a metal body similar as a format to the iPhone 5S, but a little larger.
The casing features rounded corners and a camera lens protrudes slightly.
3D renderings based on the schematics that were leaked by Japanese magazine MacFan and collected by Mac Otakara were created by NoWhereElse and designer Martin Hajek.
The concept was imagined in two versions with edge-to-edge displays of 4.7 and 5.5 inches and a thickness of 67.1 millimeters.
Rounded edges, volume buttons that are no longer separated and a sapphire glass backing are among the characteristics.
An interesting iPhone 6 concept with a slide out secondary display was created by designer Sahanan Yogarasa.
The mockup has two 5-inch Ultra retina screens with 4K resolution, a 2.3GHz quad-core A8 processor, 3GB of RAM, a 16-megapixel camera and a thickness of only 5.23 mm.
Other features include a revamped Home button and availability in different colors, including red, green and blue.