***SPOILER***

From what i heard the answer is yes.

OMG!!! Any leads on who ?

i heard that we were going to see Jacob present at a bunch of events in the characters past. Something about the flashbacks that we've already seen and that Jacob just happened to be around in the background. I read that it's flashback to Sun and Jins wedding but its going to show us that Jacob was there - I read this months ago so im not sure how valid it is