I would be surprised if we don't see the character in the upcoming SHIELD tv show. For-profit prisons experimenting on the incarcerated with variations on the super-soldier formula fits perfectly in a post-Avengers world. And if the character (and the actor playing him) gets some positive buzz, it could lead to a Heroes for Hire film or TV show.
Great idea and totally agree. I've been saying for a while that Cage will almost certainly show up in SHIELD. He is a character that really lends himself to what they seem to be going for with this show, smaller street-level stories. A great way to introduce a character that could show up in future TV/films.