According to BET's website they will be airing it this Monday.
6:50-8:00pm EST - The BET Life of Nicki Minaj
8-10:00pm EST - The Pinkprint: The Nicki Minaj Concert Movie
The silver lining is that nobody really watches TV on Saturdays—all channels get pretty low rating—so it will probably have double the viewers than it would have gotten on Saturday. Much better promo.