The episode itself was not that big a deal i must say but i fully expected them ti withhold the face of the mother and they didn't.
I also expected a two parter with the wedding itself and in the last few moments a repeat of the station scene where Ted sits on the bench and the mother approaches under her yellow umbrella.. fade out until fall.
Well.. i'm curious too see how the last season will play out. A 24 style approach would have been cool except for possible continuity purposes if they indeed meet for the first time after the wedding has concluded. That would indeed be a kick in the face if they spend the entire season with them prancing around and never actually meeting.
A few months waiting and then we'll see.