Samsung spun off a whole new Galaxy line, the A ( or Alpha) series, to practice making phones with proper metal frame and then got back to the drawing board and came out with the new design language of the Galaxy S6 family. Combining the metal frame with a dual-glass build ( front and back) is certainly not the most novel design solution but it's one that works well and it's a first for Samsung's smartphones.
And despite being their first attempt at this design approach, the Galaxy S6 came out borderline perfect - perhaps lacking on novelty, but excelling in implementation. The Galaxy S6 edge however takes it even further for those who want something that much more special. It comes with an off-the-chart novelty factor and is rightfully priced higher than the regular Galaxy S6.
