I hadn't heard that Shyamalan had actually ever started work on a story for an Unbreakable 2
, but apparently he had -- and now that idea is being used for the third film
in this Night Chronicles trilogy.
M. Night Shyamalan wrote:
I'll just say it: the third 'Night Chronicles' movie is what would have been the sequel [to 'Unbreakable']. So now I need to come up with a new idea.
There are a few more quotes in the article.