It’s possible that you are referring to a new or independent film released after that date, or a title that may not have been widely covered before my last update. Alternatively, it could also be a short film, a project in development, or something related to a specific platform or genre that hadn’t yet garnered mainstream attention.

To help clarify:
If “SELF” is an upcoming film: It could be an indie or experimental project, a thriller, sci-fi, or drama, as the title “Self” could suggest themes related to identity, personal discovery, or psychological elements. Films with similar names often explore concepts like self-awareness, cloning, or mental health.

If it’s a recent trailer: It could be a movie that debuted at a film festival or is gearing up for release in 2024. Given how trailers sometimes drop ahead of official announcements, if SELF is a film recently announced, I would recommend checking streaming platforms or entertainment news sites for the latest updates.
Would you be able to provide any more context, like the genre, cast, or key plot points you remember from the trailer? That might help me give you a more accurate description of what this movie could be about!