While some iPhone 4 orders are being shipped, others are reportedly being canceled. Apple has indeed sent the following emails to some people who had pre-ordered via the online Apple Store.
We were unable to complete the authorization process for your iPhone order. As a result, we had to cancel your iPhone order. To complete the purchase of your iPhone, please visit an Apple Retail Store or an AT&T company-owned retail store.
To locate an Apple Retail Store near you, please visit http://www.apple.com/retail/storelist/.
We apologize for this inconvenience.
Apple Online Store Team
We’re not sure why these orders are being cancelled but the word around town goes that it might be due a to a failure to authorize or people clicking the “submit” button several times.
If your order has been canceled by Apple or AT&T, please let us know in the comments.