I think if she extends her Vegas shows to a full tour, which is unlikely, then it will be same setlist----with maybe 2 or 3 more songs from her current album.
But, as she said in her most recent interview, she has to promo for the next few months, and then I think she will be trying for a kid begnning of next year.
While she seems really pleased and happy with Memoirs, it also seems like she is anxious to really extend her family.