This sounds interesting, from DAZ_Rand (DAZ Product Management), this thread, page 11.

Quote - ...use a new technology that we call GeoGrafting and it will allow the attatchment of all kinds of fun rigged stuff like wings, extra arms, tails, horns, animal ears placed on top of the head, antennae, and even the simple removal of things like ears. This goes far beyond simple conforming which is problematic. I watched a demo of the tech today and its pretty sweet.