At least according to the "A to Z of TechWave 2008" document. Last year they were loaning out SmartPhones and a PDA phone. Since I already had a Cingular 8525, which is a branded version of the HTC PDA phone, I wan't personally involved in the loaner program. They were demoing the HTC Touch in their booth in the exhibit hall, but not loaning it out.
All I can say is that if the loaner program this year includes the HTC Touch Diamond, don't stand between me and the sign up booth!