Let the hive mind of Engadget get that for you.
"I just switched to Sprint from Verizon about three months ago for the Pre. Then I went for the Hero about a week ago. Now, I miss my hardware keyboard and am thinking about switching to the Moment. I am still able to switch back to Verizon if I want and get the Droid when it arrives. Should I just trade up to the Moment when it comes out, see if I like it, and if not switch to the Droid? Or something else entirely? Help!"
I thought AT&T front man Ralph De La Vega said back in April that the entire smartphone line lineup was to be 'all 3G within a few months'
So does that mean this will be a TMobile phone?
Well, the lack of HSPDA is only rumored at this stage - maybe it does launch with 3G. I'm sure you're correct that in the US this will be a T-Mo device. However, I wouldn't be surprised if it also launches on Verizon and Sprint, where it will definitely be 3G, just like the current Curve.