Its definately going to be interesting how they handle it, personally I can see them just using someone like Kane as a replacement just for this match.
I think though where WWE could really do something brilliant by suprising everyone is by having Jericho announce his new tag partner, son of Mr Perfect, Joe Hennig (he's doing great things in FCW). That would be awesome and would help propell a new star.
Or say
Ziggler is going to work 2 matches in one night, because likes his theme says he is...."Perfection!"