All we know for now, is that the Fiend and Great Old One patrons are confirmed for ea. Nothing on Pacts yet that I've seen. For full release, all of the level 10 PHB material is supposed to be there. I'd love to see the Hexblade and Celestial make it in full release, plus the XGtE feats, spells, and invocations.
I would also love to see the Undying Pact make it in, I mean it was specifically designed forbthe Forgotten Realms, although it mentions Patrons from other settings as well. It even offers the Lich Queen of the Githyanki as a possible Patron! So it fits the story really well.
