There are so many platforms. In 2015, the Scorpions released their own documentary movie, which was available on several major visual platforms. I think IM movie will be something in the way of Bon Jovi's one. Many short interviews with a bunch of live/private moments and some attractive computer graphics. If they do it in a modern way, the entire output might be divided into a few shorter episodes, making it more acceptable to some casual music fans. I think when they crossed their hands with Universal Pictures, all distribution things have been established for good. No one is screening something like that just to spend a lot of money; those kinds of documentaries are the promotional tools, in fact. Be optimistic, please!