If anyone is interested in how frames and parts may be made in the future, have a read up on additive layer manufacturing. It's already used in F1 and aerospace for weight saving. In a crude way, it's like 3D printing with metal. Will mean that areas of parts that aren't contributing to rigidity can be removed completely, which isn't always possible with conventional machining techniques.
Definitely one for the weight weenies.
Definitely one for the weight weenies.