The Samsung display is model AMS326FA05. Interestingly, the date code on this OLED is four months old, so they may have been stockpiling these from a while to have enough for the Zune launch.

The glass is stamped with Avago X82165-001 P81302 A06.

It will be interesting to see how well the Zune HD holds up to being dropped. Fortunately, the Zune was designed in a way that should make repairing a broken front glass possible.