It should be noted that the animated Hunchback of Notre Dame is a particularly dark movie by Disney standards, so if David Henry Hwang wanted to, he could easily make the live action version a PG-13 affair.
Disney’s live action Hunchback of Notre Dame movie will pull from its animated predecessor and the Victor Hugo novel, but not the stage production that played in Europe.
Of course, that would in turn result in fewer kids getting to see it in theaters, so Disney will surely want to stay in PG territory.
Beyond that, we’ll have to wait and see how this live action adaptation will be a straightforward remake, like 2017’s Beauty and the Beast, or if it will deviate from the previous story significantly, like 2014’s Maleficent.