And you think of all of the things you've seen, and you wish that you could live in between ,and you're back again only different than before...
After the Sky.
-Into the Woods (Jack)
I don't know. I believe she's scheduled to leave the same time as Joey McIntyre. I think she's got a movie lined up next. I think that she should do the revival of Evita next. That could be pretty crazy.
I think she won't extend her contract. She might do some of the national tour, though; I've heard lots of different things about that, but I think the main rumor floating around is that she'll do Toronto for at least some of Wicked's run there.
As far as I know, she has no projects lined up afterwards, except for (maybe) opening the tour in Toronto, so it is a possibility that she will stay with the show. A very slim possibility. An EXTREMELY slim possibility. Don't hold your breathe; assume she'll be leaving. Even though the show hasn't been on Broadway for quite so long, she's been with the show for about three years now.