Board Thread:General Discussion/@comment-12055413-20151211233943/@comment-25733960-20151212041409

That's a interesting point

With the exception of season 2, every other season had a time jump after the winter finale (S1 a few weeks, S3 a whole year). This midseason time jump could be revealed at the end of the season:

Time flow may be different in the Underworld, there is chance they will go back to Storybrooke to find out a year (or even more) has passed since they left

Maybe that could set up the plot for season 6, if they return just to find out a new villain is controlling Storybooke now and all the residents are slaves or somenthing.