Apple Inc.
The leaf on the Apple symbol is tinted green at the Apple flagship store on 5th Ave in New YorkReuters

Apple is tight-lipped on its upcoming device, iPhone 8, like in the past but that won't stop rumours and leaks. So much has been talked about the next-generation smartphone, and the latest we hear is that mass production of its cases has begun, giving a hint that the rumoured design and dimension could turn out to be true.

The iPhone 8 is expected to be released in September as the Cupertino giant has the tradition of releasing its flagship during this time of the year. The iPhone 7 was also released in September last year.

Also read: iPhone 8, iPhone 7s Plus mass production begins, new design surfaces

Interestingly, leakster Benjamin Geskin @VenyaGeskin1 has uploaded the purported cases of iPhone 8 with a caption that its mass production has begun. The design of the device is not confirmed yet but one thing for certain – that the case manufacturers are confident of the phone's dimension.

It is seen with a vertical dual lens camera, down keys and a power button bigger than the volume up. It could be bigger than iPhone 7 in size, but smaller than iPhone 7 Plus.

The same source had earlier posted the purported schematics of iPhone 8 with a dimension of 143.4x70.77x7.51 mm and dual camera in the rear. It also posted a sketch of the device with vertical dual-camera, sans physical home button, bezel-less except the top edge, elongated power button and an orange line on the back.

iPhone 7
The new iPhone 7 smartphone is displayed inside an Apple Inc. store in Los Angeles, California, U.S., September 16, 2016.REUTERS/Lucy Nicholson

It may be mentioned that Apple is expected to release three devices -- 4.7-inch, 5.5-inch and 5.8-inch with OLED (organic light-emitting diode) screen. The handsets could be called iPhone 7s, iPhone 7s Plus and iPhone 8. Reports have claimed that the devices will feature an A11 chipset, an iOS 11 operating system, a virtual home button, a 3D depth-sensing front camera, a wireless charger, and a new fingerprint ID solution.