It's not just the Dash 3G that T-Mobile USA are talking about today. The carrier's usual PR preamble to the HTC Snap-rebrand announcement included confirmation that T-Mobile would "share more details about its next Android-powered phone" next week. That device is expected to be the myTouch 3G, also known as the HTC Magic.
"Next week, T-Mobile will share more details about its next Android-powered phone, the follow-on device to the T-Mobile G1 with Google. More details on additional T-Mobile smartphones for this summer will follow."
The myTouch 3G is set to be just the first of T-Mobile's new smartphone range, seemingly, with more models promised after its announcement. According to the PR-speak, while we may only be seeing a debut, not a launch, of the next Android smartphone next week, it's set to arrive sometime over the summer.
The phone is expected to be little different from the HTC Magic already on sale in Europe, though obviously with the necessary T-Mobile USA 3G band support. For full details on the phone, check out our review over at Android Community.