Today, FCC just passed another pc card with AWS 3G Bands (1700, same T-Mobile uses). This notebook module supports 8 bands. The WCDMA/ HSDPA/ HSUPA frequencies are 850, 1900, 1700 and 2100, while GSM/EDGE are 850, 900, 1800 and 1900. The Huawei EM770U is another card/usb stick that will be compatible with T-Mobile 3G Bands.
More information will be released soon.