Here's what we know:
* He's working on a new film. Carruth has been developing a new film called "The Modern Ocean" for several years. It's been described as a sci-fi thriller with a large ensemble cast. Unfortunately, there's no official release date yet.
* He's been secretive. Carruth is known for his privacy and reluctance to engage in publicity. He hasn't given many interviews or updates about his work.
* He's still involved in filmmaking. Carruth's company, "Primer Pictures," is still active and has been working on projects related to filmmaking technology.
* He's not giving up. Although his career has been slower in recent years, he seems committed to making more films.
The lack of information makes it hard to say definitively what happened to Shane Carruth. However, it's safe to assume he's still working on his craft and hopefully we'll see more of his work in the future.