BusinessInsider points us to this concept from Matteo Gianni and friends that imagines a low-cost iPhone inspired by the original translucent, brightly colored casings Apple introduced with its iMac G3. While the G3-inspired back casing comes from only one sketchy DigiTimes report, the concept also appears to include a curved backside and other elements that line up with more concrete reports.
There have been many rumors this year about what upgrades Apple will include in its anticipated annual iPhone refresh. Most agree Apple will move to release two iPhones, but there is some debate about what those phones will be.