Well, if you take scripts literally, we have been told when we'll see the wedding, LOL. (Personally, as I've said before, I'd rather that didn't happen; I want the wedding to be the series finale. However, since they didn't ask me ... it probably won't be.)
As to the dress, as Reichle pointed out, that sucker was VERY expensive to make. (Bullion lace is partly woven with very thin wire made of precious metals.) I can't imagine why Marlowe, who is notoriously frugal with production costs, would allow Reichle to make a dress that expensive if it wasn't going to be used for a very important scene (or auctioned off for a charity.) That's why I took a hard look at it. It didn't really strike me as a dress that Kate would choose on her own, but it's Marlowe and Reichle's opinion on it that counts, and if they put Katic in it, that is what Kate will "choose."
It wasn't bullion lace, of course; mine was 
