My theory is that it will be Moesha related. Okay, Now Listen announced they have a special guest when they return on 2/2 and the podcast is sponsored by Netflix and Strong Black Lead. Sylvia, one of the cohosts, is a huge Brandy fan and she was tweeting about the Moesha clubhouse event and Brandy joining.
That all may be a reach, but I can't imagine it will be music related. She's not recording or promoting b7 anymore. And Chicago? We won't be able to be in a theater until 2022 so why would she be working on that?