An official Celine Dion documentary is in the works, as opposed to that very unofficial biopic
The project aims to be the "definitive feature" about the singer, which seems like a pointed detail

A few months ago, we brought you word of Aline, an unauthorized Celine Dion biopic starring Valérie Lemercier as Aline Dieu, a Canadian pop singer who is definitely not Celine Dion. That on its own is nothing especially egregious, but the brilliant/baffling twist in Aline is that Lemercier plays Aline at multiple stages of her life, including as a 12-year-old, but it sounds like the ridiculous nature of that concept is at least partially meant to be a joke—maybe in hopes of drawing attention to the film for making such an audacious choice, which has definitely worked out. Aline has just been picked up for U.S. distribution by Roadside Attractions, so we’ll get to see it here eventually, but it seems like all of this buzz around a fake Celine Dion has convinced the real Celine Dion to try and get ahead of all the Aline hype a bit.