If I was a betting man, I would expect the new HTC Android device to be one of the first 3G devices on the new T-Mobile 1700 megahertz range network.
Why? It's an instant market differentiator, and it puts data plans on a network that was licensed and built just for that. I mean, how hard does one have to realize that a Google device is very much oriented in that direction.
The key is, will the data plans be ad-subsidized by Google in some way to build market share?
I also would expect it to have UMA built in, just like the T-Mobile Blackberries and a few Nokia and Samsung devices to work with the T-Mobile @Home service, as well as at any hotspot that T-Mobile powers.