This is unimaginably tragic.
The team did release a statement on the matter, though (below):
The next chapter of the Insidious series is here, and as usual, it's freaking horrifying!
Lin Shaye is back as psychic Elise, and this time she's defending a young girl from the spirits of the dead! And they're hungrier than ever…
Ch-ch-check out the video (above) to see the frightening first trailer for Insidious Chapter 3!
Though the upcoming installment should really be called Chapter 0, because it's totally a paranormal prequel.