Buyers awaiting the release of the new iPhone 6s could very well claim that they are well-informed with the sheer amount of leaks and rumors floating around a few days before the Wednesday unveiling event at the Bill Graham Civic Auditorium. There is, however, one particular aspect that has so far been missing: What is the iPhone 6S' shape?

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.

There are two new tidbits, however, that can indicate potential distinctions. First, there is the use of a different material. Supply chain leaks show that the new material could be the 7,000 series aluminum, which is lighter and tougher than what was used for the iPhone 6. The changes "are perfectly logical adaptations for Apple to have addressed the Bendgate situation," Greg Koenig, Luma Labs co-founder and industrial designer, told Techcrunch.

Second, there is a rumor that a new color will be added to the current gold, silver and gray metallic tones. The fourth color is allegedly rose gold to complement the Apple Watch variant that has the same hue, according to Apple Insider. This is different from the earlier rumor that the new color is pink.