I can't say this is much of a surprise at this point, but according to a Wall Street Journal interview with AT&T retail president Paul Roth, Nokia's Lumia 900 Windows phone has exceeded AT&T's expectations. The device has sold out in many stores, and demand is otherwise quite high. Additionally, these results came before Nokia began offering a $100 credit on the device, so sales are expected to increase even more thanks to the price cut.
This news comes in addition to the fact that the Lumia 900 has topped Amazon's charts, but still doesn't include any actual sales numbers. So while there's not really any real data, it is still impressive that the new smartphone managed to sell well in the face connectivity problems and just the fact that a lot of people don't really know about Windows Phone 7 yet.
Although it may not be a shock to us in the tech world, the Lumia 900 sales are very important to both Microsoft and Nokia. As the flagship Windows Phone 7 smartphone (for now) and Nokia's big re-entrance into the premium smartphone market, both Microsoft and Nokia have quite a lot depending ont he success of the Lumia 900.
Nokia and Windows Phone 7 aren't set just yet, but exceeding expectations is always a great way to launch a flagship phone.[electronista]