I suspect they'll not really focus on religion either way. Hollywood tends to dramatize conflicts, challenges, setbacks in these kinds of stories...human aspects, not really trying to send religious or moral messages.

I suspect the story will focus on the journalist -- how Mr. Rogers challenged the journalist's world view, how the journalist responded, and ultimately became a better, more hopeful person. I doubt it'll be a religious transformation because the Hollywood studios generally like to focus on universal, relatable themes like hope and kindness. Religions may offer hope and kindness, but there are no universal religions.

The lack of religious focus may disappoint you. Sorry. Maybe I'll be wrong!