At TUAW we typically look the other way when it comes to iPhone rumors, but once something hits the Wall Street Journal, we pretty much consider it a done deal. The WSJ now reports that Sprint will offer the iPhone 5 in mid-October, bringing the handset to the third-largest US carrier. The iPhone 5 will hit AT&T and Verizon at the same mid-October date. This is according to the Journal's sources, "people familiar with the matter