Forsaken is an easy one, because it's most likely Calia-related and linked to her resurrection and new form of Forsaken-ness (Lightforged Undead). She's being postponed in-game like the Mechagnomes were.
Worgen is the one that's strange. It's unlikely to be Kaldorei Worgen because we already have a Night Elf AR (Nightborne), so what will the Worgen one be?