Apple's widely rumored iPhone with an OLED display will feature a polished stainless steel enclosure sandwiched between front and back glass, says Japanese blog Mac Otakara. That's the same iPhone 4-like design that reliable Apple analyst Ming-Chi Kuo of KGI Securities has expected since last year.

"iPhone Edition" render by Japanese blog Mac Otakara

The blog claims the so-called "iPhone Edition" will use an improved version of the Apple Watch's stainless steel enclosure. It also says the smartphone, more commonly dubbed "iPhone 8" for now, will have a conventionally flat OLED display with 2.5D cover glass along the edges, as rumored previously.

As seen in a few renders over the past few weeks, the report claims the "iPhone Edition" will be equipped with a vertically-aligned iSight Duo camera on the rear for VR shooting purposes. Accordingly, when the iPhone is used in a VR headset, the cameras would be positioned horizontally as is customary.

Meanwhile, the tentatively named iPhone 7s and iPhone 7s Plus are expected to be slightly thicker than the current iPhone 7 and iPhone 7 Plus, meaning that some existing cases and accessories might not fit the newer models. From a cosmetic standpoint, however, those smartphones are expected to look similar.