The iPhone rumor roundup assumes the body will be aluminum. However, coming from the very stiff, hard, and scratch resistant stainless steel of the 4s, this seems like a step back to me. Wouldn't it be great if one of the most important features of the new iPhone would be that it doesn't need a case anymore? Apple knows most of their clients use cases, and they hate it. If the body is from liquidmetal, it could slightly absorb impact, protect the glass front, and result in an extremely durable phone: Many assume that a unibody is not feasibly in liquid metal yet, because currently only small parts can be made. As explained by it's inventor However since the unibody of the iPhone consists of 5 smaller elements (bottom and top antenna, sides, and backplate) and apple has patents for bonding metal parts together, and machining the edge (resulting in a beveled edge: like seen on the leaks!) this might be exactly what they are doing. btw: They also have a patent to bond plastics to metal. Thats what they use to bond the 4s antennas together. But why wouldn't they use that for seamlessly bonding the antenna windows to the body? They could use plastic with anti-scratch surface coating.