The available details seem to underscore two assumptions: 1) It will have the same shape, but 2) it will be more solidly built. It is important to note that Apple typically works within a two-year design refresh cycle for its smartphones, according to Techcrunch. The upcoming device falls within the second year. Now, this is aligned with an earlier HNGN report that explains how the iPhone S models are usually focused on camera upgrades and not on external design. So fans should expect the same rounded edges, metal construction and overall design philosophy.