As reported the iPhone is not available anymore on the online Apple store. AT&T has restricted iPhone sales briefly to one iPhone per customer this week. Since Thursday the restriction has ended again and is back to the normal 3 iPhones per customer limit.

AT&T wanted to make sure everyone who wanted an iPhone gets one, but I guess they figured quickly that demand is not that high right now and they should be happy if a customer walks in and wants to buy 3 iPhones.
The 3G iPhone is around the corner. Even if you do not have 3G coverage in your area, the new iPhone might have new features like GPS.
Via InformationWeek. More 3G iPhone News.