What's the upcoming movie about a guy who spends his life in a coma & imagines things? Current trailer is out.

I saw this trailer at an arthouse/independent movie theater here in Phoenix (Camelview). It looks like it has extremely beautiful imagery of what's being seen in this man's life as his loved ones are aging in real life... I want to watch the trailer again but I can't remember the name. I'm sure it is a limited-release/arthouse type of movie.