Board Thread:Spoilers!/@comment-25926288-20170511234425/@comment-24304025-20170512124058

Could it mean, though, that some guest is being promoted? Five regulars seems too little for Once patterns XD

Sure, that way they can develop them better, but flashbacks are quite limited without Snowing for Regina or Belle for Rumple.

I assume Cora is 99% certain to appear, since she shares history with both the three main characters who are staying. Same with Tinker Bell and probably Pan. (Rose even asked Adam on TT to return next season). We might finally learn more of Neverland.