Last year, an interviewer asked Francis how he envisages hell. His response stayed with me: “It’s difficult to imagine it. What I would say is not a dogma of faith, but my personal thought: I like to think hell is empty; I hope it is.”
Catholicism isn't Protestantism. The idea that the Bible is the only source of truth is a Protestant idea and thus is very visible in the US. Catholicism, however, teaches that tradition and church teachings are sources of truth on par with the Bible. As such, for many teachings, especially those like Hell where the Bible is unclear, what it says isn't very relevant to Catholic doctine.