According to an article at DigiTimes, Lite-On has received orders from Toshiba for half-height HD-DVD burners.
Lite-On IT, Taiwan's largest optical disc drive (ODD) maker, has received orders from Toshiba for half-height (H/H) HD-DVD burners, according to sources at components suppliers.

Toshiba is releasing the H/H models to Lite-On IT in order to focus its own production on slim-type HD-DVD burners in the face of strong competition from the Blu-ray Disc (BD) camp, the sources said.
The article also mentions that HP and other computer manufacturers are expected to launch HD-DVD equipped PC's in September of 2006. If you'd like to read more, head on over to DigiTimes.