The dual-core HTC Sensation 4G will be available on T-Mobile starting June 15th

Now that was quick - T-Mobile officially announced that the second dual-core chipset to hit American soil will be Qualcomm's Snapdragon in the HTC Sensation 4G, come June 15th, just a few weeks after the European availability.
The HTC Sensation 4G runs the newest HTC Sense UI, which offers actionable lock screen and instant shot-to-shot times in the camera interface, among other new features. Sense also now integrates HTC Watch, for movie and TV series streaming, and HTC Listen, a music service. From the carrier's side comes T-Mobile TV, a selection of free channels for live streaming, as well as T-Mobile Video Chat, which is powered by Qik.
source: T-Mobile