If you were at all wondering what US carrier the MyTouch 3G aka the HTC Magic was going to land on and you completely missed the previous obvious hints, well then this would be news to you, the MyTouch 3G is going to be a T-Mobile device!
What IS news is that this is the first time an actual T-Mobile branded MyTouch 3G has been seen which should mean that a release is sooner rather than later. According to the cameraman, the MyTouch 3G was handed to him by a Google employee. Not sure if that's at all relevant but the 'with Google' branding confirms the MyTouch 3G as a 'Google Experience' phone.
Here's to hoping that the T-Mobile MyTouch 3G is on the fast track to releasing!