Welcome to the board, the 2012-2013 schedule was released on August 22nd this past year so you can assume it will be in that same time frame since the ACC doesn't have any schools using NBA arenas like do in the Big East to hold up schedule games.
Here is last year's schedule announcement. espn.go.com/blog/collegebasketballnation/post/_/id/62971/accs-2013-espn-television-schedule