I know what it means! I also applied to their applied econ program. I read somewhere in their graduate school website that "final review" means that the decision of your admission has already been made by the department and handled to graduate school to post it. So, if I were you, I would expect to see the decision, maybe!, Monday morning (unless they work over the weekend).
EDIT: mine is still "awaiting program decision"... When did you submit your application? AFAIR, I submitted mine in mid-October.