No, Desire HD has standard TFT LCD screen.
Source: newer sources on the internet + my friend has Desire Z which comes with SLCD and the quality is noticeable better, colours are much deeper and picture is really crisp..
Shame they couldn't do it with Desire HD..
However, I must add that despite the fact it's LCD, the picture on DHD is very good anyway, and generally it's the best phone made so far. I really love it.
Symbians -> WinMobile (last HTC Touch HD) -> Android (HTC Desire HD -> HTC One X)