HTC has presented a WiMax enabled device at the WiMax World Conference in Chicago. The phone in question is the HTC T8920 and looks exactly like the HTC Touch HD. The T8920 also contains the 3.8 inch screen with a resolution of 840 x 480. We can see from the images that the phone runs on Windows Mobile with Touch 3D running on the top. Let's wait for HTC to announce it.
Source : Mobile Review Forums