According to CNET News, the Nokia Lumia 900 is in short supply at many AT&T retail stores, especially in the particularly head-turning cyan color. It could be a sign of an auspicious sales run for the device, and the start of something big for the trio of mobile tech titans consisting of AT&T, Microsoft, and Nokia. We’ll stay tuned to other news reports to see if the shortages persist, and keep you posted on the latest details. Have you been able to get your hands on a Lumia 900 recently at a retail store? Let us know in our comments!