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I've confirmed that they're full LED by asking Tesla. I haven't seen them in person so I cannot comment on that directly. I will say that the video of Model X driving around at night seems to show bright headlights.
Seems to me the emphasis on the Model X reveal was more mass-market with focus on safety and power/speed. For the techies who are hungry for all of the innovative updates this vehicle will offer - I'm sure there will be ample information for us soon!