Apple's fall event for unveiling new iPods usually takes place in the beginning of September, but there are reports that this year's event could pull the curtains back on the iPhone 5 instead. According to MacRumors, Japanese website Kodawarisan claims that an insider source has confirmed that this year's event will take place on September 8 Japanese time, which means September 7 in the US.
Apple has historically presented new iPod products in its September media event, which typically falls on a Tuesday or Wednesday. The past three events took place on September 1, 2010, September 9, 2009, and September 9, 2008. Hence, a September 7 guess seems safe since the following Tuesday or Wednesday would follow the 10th anniversary of the 9/11 attack, something Apple surely wouldn't want to compete with for media attention.
Previous reports have said that the iPhone 5 may not appear until October, but it's unclear if Apple may announce the iPhone 5 first without actually releasing the product until October similar to what it did with OS X Lion and iOS 5 that were both announced at this year's WWDC event.