It means your application is complete and you are qualified for admission, but they are not yet offering an appointment. Most likely you are on the borderline for getting that appointment and admissions is waiting to see how many outstanding offers are accepted before making a decision on your file. Hang in there. There are always some appointments from the hold list. Be sure to update with new grades, test scores, awards, etc, as you never know what might put you over the top. Best wishes!
