Never heard of "Infinitely Polar Bear"? It's a Bad Robot production starring Mark Ruffalo (Bruce Banner in "The Avengers" and the tail end of "Iron Man 3") about a manic-depressive father who takes care of the kids while his wife (Zoe Saldana) is away.
JoBlo has published a review of the movie, suggesting it is better than its elevator description makes it sound. This is a family film, not an action/adventure movie.
Director Maya Forbes talks about the movie in this video:
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Meet the Artists '14: Maya Forbes - Sundance Film Festival
The movie was scheduled for a January 18, 2014 release
according to IMDB. That may just be a reference to Sundance. ComingSoon.net does not include the film in its release date calendar yet.