Investor’s Business Daily – Reports stating that Apple (NASDAQ:AAPL – News) will roll out its newest iPhone in Sept. were wrong, according to a blog citing sources close to smartphone carrier AT&T . Speculation of a Sept. launch was based on information that AT&T banned employee vacations that month. But according to the blog All Things Digital, which cited unnamed sources, the iPhone 5 will debut in Oct. It didn’t offer a specific date or insight into the new phone’s features. Piper Jaffray said there’s pent-up demand for the iPhone 4’s successor that could lead to strong sales. Apple rose 1. …