I dont remember the details, since its not my thing it sort of drifted out of my head in a couple of hours, but I was talking with tim about the new pickups, and they're there to fill in the 'gaps' in the tele lines. Which gaps exactly I dont recall, and how they fill them I wasnt told in any detail and didnt ask, but they sit in between existing models in output/character/tele pickup lineage (with some things that were missing that are completely period correct).
Hope this helps, sorry I cant be of more use.