iPhone 5 Pre-Orders may Start September 30
Here is quote from apple:
"Apple currently plans to begin pre-orders for their next-generation smartphone in the final days of September. The company has still not finalized the pre-order start date, but is debating between Thursday, September 29th and Friday, September 30th. The 30th seems more likely at this point according to one of our sources. Pre-orders for the new iPhone starting in late September will also mean that Apple’s fall event will take place in September; which would seem to counter NewsCorp’s Kara Swisher’s combative insistence of an October iPhone 5 event."
It is important to note that Apple is still being secretive and can change their launch date at any time up to the last minute.