Apple (NASDAQ:AAPL) has sent out invitations for a Sep. 12 event at the Yerba Buena Center in San Francisco. The event, which starts at 1PM ET, is widely expected to feature the release of a new iPhone, with many expecting the device to go on sale 9 days later. Recent reports suggest the iPad Mini won't be announced until October. The teaser image for the Sep. 12 event suggests the next iPhone will be called the iPhone 5.