We feel pretty confident that Samsung’s Galaxy S5 will be a killer smartphone but one question remains: Will Samsung finally follow in the footsteps of the iPhone 5s and the HTC One and use a premium aluminum build or will it stick with its tried-and-true plastic formula? The latest gossip from Korea’s ETNews suggests that Samsung may release two flagship smartphones at the same time next year: The Galaxy S5, which will have Samsung’s trademark plastic casing, and the Galaxy F, which will be the first flagship Samsung smartphone to have a metal casing. This isn’t the first time we’ve heard of the Galaxy F, of course, but this is the most concrete report we’ve read so far indicating that