E mail reply from Samsung about this unit follows:
Thank you for contacting Samsung technical email support. We appreciate your business, and hope to assist you in any way that we can.
This model is indeed planned to have a built-in digital tuner to receive HDTV signals from the air. The release date is not official yet, but estimates have it at early 2007. This is subject to change of course, but that is the plan as of now. Hope this helps.