The mockups showed off a larger size, rectangular volume buttons and a power button on the right hand side of the device. Reuters

Adding to the flood of leaks related to Apple Inc.’s (NASDAQ:AAPL) iPhone 6, a smartphone case maker showed off an alleged next-generation iPhone mockup at the 2014 Hong Kong Electronics Fair on Tuesday, while a French blog published multiple images of purported iPhone 6 cases on Wednesday.

Mac Otakara, a Japanese website, shared a set of images of iPhone 6 mockups and accessories that were displayed in multiple booths at the Hong Kong Electronics Fair. One of the images showed a physical iPhone 6 mockup, which had allegedly been used to create cases for the next version of the iPhone. And, though the mockup provides few details about the iPhone 6, it does support some earlier rumors about the phone's larger size, its rectangular volume buttons and a power button on the right side of the device.

iPhone 6 mockups. Mac Otakara

In addition, the mockup also includes a round camera flash, which was previously described in schematics leaked last month. Mac Otakara also published a video, which showed some lightning cables that could belong to the iPhone 6.

While the legitimacy of the mockups and the cases cannot be confirmed, all the iPhone 6 leaks that have emerged out of Asia have mostly referred to the same form factor, MacRumors reported.

Meanwhile, NoWhereElse, a French technology blog, published images of a set of silicon cases, rumored to fit the iPhone 6, providing a closer look at some of the possible design changes for the upcoming flagship smartphone from Apple.

Alleged iPhone 6 case. NoWhereElse

The cases have slightly rounded edges, similar to the 5th generation iPod touch and iPhone 5c. The cases also feature openings for a repositioned power button and thin rectangular volume buttons, as suggested by earlier rumors.

9to5Mac, however, said that the iPhone 6 case images could be “a case makers attempt to get ahead of the game.”

On Tuesday, a purported leaked photo of an iPhone 6 front panel surfaced on a Chinese micro-blogging website, suggesting a 5.1-inch screen with a 16:9 aspect ratio.