Quote - Does anyone  know what the HD technology is? are they hi res scans? That would be nice. Hi res body sculpts may not be so interesting to me. Bumpmaps and how you make them seems pretty important in HD as well... 

Yes and no. If I up the mesh to about a million polys I could use an alpha brush in zbrush to paint the skin texture that the bump map would have done. I can put in a mole that was visible on the texture but the bump map only slightly emulated. Skin folds on the knuckles could be done as well.

Also since this this done directly on the mesh, it would be independent of UVs and have the same detail whether I use a texture for M4, V4, M5, V5, V6, M6, etc... where a bump map would be depending on the UV unless you manually convert it to another.