The Lumia may be AT&T’s biggest wireless handset launch since the iPhone. This is a big gamble on AT&T’s part. If successful, it could stand tall. It could help reboot Nokia and Microsoft in the wireless business. If unsuccessful then AT&T will have egg on its face. AT&T, Microsoft and Nokia have started cranking out press releases and turning up the heat on their marketing engines. They do that well. Why is AT&T taking such a risk?

