Finally, a legitimate iPhone 5 leak, and this one reportedly shows the new backplate. It is all aluminum and boasts a dock connector port that is much smaller than its predecessors. This model will also come in black and white colors. Continue reading to see the black version.
Apparently the part comes from a Chinese supplier who, according to iFixyouri, is reliable. But not even they know if it is for an actual product or a prototype. This more or less lines up with past rumors of a metal backed iPhone and a smaller dock connector, but then again, you could probably find rumors to back any combination of features you'd ever think of.
[Sources 1 | 2 | 3 | 4]