They sent another tweet:
Once Upon A Time @OnceABC
Henry. Rumple. Cora. Regina. Nealfire. Emma. Red. Granny. Charming. Hook. Archie. #OneWillDie Sunday
I laughed at seeing Red and Granny in that list, and even Archie, because those are more random choices that have been discussed by the fandom. Also, they used the name Nealfire…that’s SO from fandom. I totally think the powers that be are spying to see how people have been speculating about this upcoming death, and because so many have figured out it must be Cora, they’re trying to throw other options into the mix through official channels. *waves to the ABC spies* 😛
Notice that the pic they’re using of Rumple is actually Dark One Rumple, even though it’s Mr Gold Rumple that’s currently dying. I think the way they had the graphic with both Rumple and Cora in it may have been a sly little indication that it’s The Dark One who will die, and that will be Cora, after she takes Rumple’s powers.