RB secured the ticket for the game between champions and cup winners before the start of the Bundesliga season by winning the DFB Cup final on Saturday evening against SC Freiburg (4-2 in penalty shootout).
The venue has not yet been determined.
Bayern are record winners of the Supercup, which is initially organized again from 1987 to 1996 (as a DFB supercup) and then since 2010.
Leipzig starts for the first time – and meets ex -coach Julian Nagelsmann.
Bayern won the National Supercup last year with a 3-1 at Borussia Dortmund.
It was the first competitive victory for Nagelsmann as a FCB coach, Robert Lewandowski scored twice at an old place of work.