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A police officer is silhouetted against the Apple logo in Grand Central Terminal in the Manhattan borough of New York January 13, 2015. Reuters/Carlo Allegri

Leaked images of the iPhone 7 case have surfaced, revealing that the iPhone 7 won't look too different from the iPhone 6S and iPhone 6 smartphones.

According to 9 to 5 Mac, the iPhone 7 case appears to feature curved corners and a flat rear panel like the iPhone 6S. The case features a large cutout for a rear camera and LED flash. Speculations suggest that unlike the iPhone 6S, the iPhone 7 will not have a camera bump.

There also appears to be no slot available on the case for the 3.5 mm audio jack, indicating that the Apple iPhone 7 will allow users to listen to music through Bluetooth or Lightning port headphones. The hole for the Lightning port has two cutouts for equalised speaker grilles on either sides of the phone. With two speakers onboard, the Apple iPhone 7 will be capable of delivering stereo sound output.

The rumour mill has also claimed that Apple may launch a high-end version of the iPhone 7 Plus, which will be available on the market with the “iPhone 7 Pro” moniker. This variant is expected to feature a dual-camera setup.

Other rumours have suggested that the iPhone 7, iPhone 7 Plus and iPhone 7 Pro that are pegged to be unveiled in September this year will not feature horizontal antenna bands on their rear panels. However, this cannot be confirmed through the leaked images of the iPhone 7 case.

Meanwhile, Apple will be holding a launch event on March 21 to introduce a number of new products. Speculations indicate that the Cupertino company may announce a 4-inch iPhone SE (Special Edition) smartphone and a smaller edition of the iPad Pro. It is also expected to unleash new band options for Apple Watch and a virtual reality headset.