Board Thread:Spoilers!/@comment-26225812-20150611110107/@comment-5899967-20150907143942

I think it's safe to say that the Dark Swan is gonna stick around, just look at the official synopsis.

"The Storybrooke residents will be trying to “cope” with Emma’s (Jennifer Morrison) transition into The Dark One."

The way it says transition sounds like it's just the beginning of an ongoing thing.