T-Mobile announced the HTC Radar 4G today. It is a Windows Phone and is expected to arrive in time for the Holidays. The Radar 4G offers a 3.8" touchscreen display, Windows Phone 7.5 Mango, a 1 GHz Snapdragon processor, and 5MP camera.
Release Date: in time for the Holidays UPDATED Monday October 24, 2011 (This device will arrive Wednesday November 2, 2011)
Confirmed Carrier: T-Mobile