Board Thread:Spoilers!/@comment-25733960-20170312061043/@comment-27060727-20170424162453

From TVLine's May Sweeps preview:

SEASON FINALE (MAY 14): Per its title, “This is the final battle,” says Kitsis — and thus the end of Henry’s storybook. “The two hours are devoted to everything we’ve set up for six years, and the final scene will let you know what we’re going to do” in the event of a Season 7. “After 132 episodes, we wanted to be able to complete this chapter — and set up the new one,” with help from characters played by Andrew J. West (The Walking Dead) and Alison Fernandez (Jane the Virgin). “They tie directly into our future plans,” says co-creator Adam Horowitz, “as well as what we’re currently doing.”

http://tvline.com/gallery/may-sweeps-spoilers-2017-finale-episodes-photos/#!17/sweeps-once-upon-a-time/