Now it's official, T-Mobile US will definitely release the HTC Wizard and Tornado as "T-Mobile MDA Handheld" (which is called T-Mobile Vario at T-Mobile Europe) and "T-Mobile SDA Smartphone" (which is called T-Mobile SDA II at T-Mobile Europe while the SDA II isn't a Windows Mobile 5.0 device at all).
That said, both devices will be Windows Mobile 5.0-powered and the Smartphone will also utilize this "nice" North-American Smartphone hump.
Availability is scheduled - according to T-Mobiles registration page - for February:
At the moment you can sign-up for a T-Mobile notification E-Mail to get the latest information about the availability.
Cheers ~ Arne