The significance could be in its ability to make the audience or readers feel a sense of infinity. It might make people think about the cyclical nature of life or events.
I'm not sure specifically which 'Kenny Morrison Never Ending Story' you are referring to. There could be many works with that name. It might be a song, a book, or some other creative piece. Without more context, it's difficult to give detailed information.
As far as I know, there may not be a 'Never Ending Story 3' officially released. But the film industry is always evolving, and new projects can come up unexpectedly.