Does anyone know if or when GSN will begin showing the rest of 1984, all 1983, all 1985 and all 1986? Is 1984 all they have? If so, is the rest owned by USA still? What's the deal here?

USA dosen't own jack crap now. Heck, the only shows they ever owned were their originals (IE: Bumper Stumpers), but they've even sold THOSE off to Sony

Fremantle Still holds from 9-83 to 2-84, and 12-84 to 9-86. And knowing GSN, pickup of these eps won't happen anytime soon

I have heard (unofficially) that more episodes will be coming in the fall. Which ones, I don't know.