It seems Agnes Jaoui & Jean-Pierre Bacri will be writing for a future project directed by Jamel Debbouze ( video Interview - Entree Libre)

In the interview with Entree libre, Agnes Jaoui talks about L'art de la fugue, her way to work with Jean-Pierre Bacri, her collaboration with Alain Resnais, speaks fondly about Jamel Debbouze and reveals that she (and presumably Bacri), will be working again with him on a future project directed by Debbouze:
Agnès Jaoui, le goût des autres di MagEntreeLibre