Apple expects to sell 1 million to 1.4 million iPhones this weekend, this is excluding the 900,000 pre-orders. It has the possibilty to be the biggest selling product release in history! http://online.wsj.com/article/SB10001424052748704629804575325661775151320.html?mod=WSJ_Tech_LEADTop
UPDATE: They sold 1.7 million. Apple's most successful product release in it's history.
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.