Apple has instructed supplier Hon Hai to begin shipping two new iPhone models in "early September," according to The Wall Street Journal. The company is widely expected to unveil its next-generation flagship iPhone, commonly referred to as the iPhone 5S, on September 10th. Rumors and leaked photos suggest Apple is also prepping to announce a new, less costly iPhone with a plastic build that will be available in a variety of colors. The Journal's timeframe matches up with Apple's previous iPhone introductions. Last year, the iPhone 5 was revealed on September 12th and shipped to consumers just over a week later on September 21st. Apple has yet to issue press invites for its rumored event, but until then, you can track all the rumors and tidbits regarding the forthcoming iPhones here.