I'm definitely in. This thing is a godsend for those of us who spend a lot of time on a plane or in the field.
I just hope that I can pop my existing 3G sim from AT&T out of my laptop and into this thing.
I am surprised that AT&T went along. They've taken some major hits for letting the iPhone overrun their network. They need to upgrade - I bet Apple has some major strings attached.
They seem to be pricing this aggressively. They may effectively kill the net book market. Despite the props that they gave to Amazon with the Kindle, this will take a lot of that market share as well. Mind you, the Kindle is great for what it is with their eInk display - it's battery life is amazing. Even at 10 hours, Apple is behind there. It would be nice to see an OLED version instead of just IPS. I see iPad 2.0 on the horizon.
It's nice to have some competition in the marketplace.