According to this article in The Hollywood Reporter, Dark Horse has acquired distribution and will be released in theaters here in the US this summer. It's been picked up by Brainstorm Media, marking their first theatrical outing.
Producer Ted Hope is quoted as saying, "Like that old 35mm we all once loved, Dark Horse will be playing only in theaters this summer. Meyer and his team have constructed a way for the filmmakers and our investors to be true partners in this venture."
Apparently, we can expect Dark Horse to open in New York on June 8th, followed by later openings in other cities. The article doesn't say so, but presumably Brainstorm will follow this up with a DVD/ digital release after the summer, for those of us who don't live in a major, metropolitan city.