The name Jacinda is a variant form of Hyacinth, the name of the flowers that keep popping up throughout the episode.
Henry's apartment number is 815. The clock tower in Storybrooke was stuck at 8:15 until Emma broke the curse. This is also the exact time that Emma gave birth to Henry.
Ginnifer Goodwin, Jennifer Morrison, Josh Dallas, Emilie de Ravin, Jared Gilmore, and Rebecca Mader are no longer credited as series regulars.
Most, if not all, of the season 7 filming locations are centered around Columbia Street (usually between Sixth and Eight Streets) in New Westminster, British Columbia, Canada.
The place at the beginning of the episode is the Seattle skyline