Life During Wartime is scheduled to be released theatrically in the US this summer. According to an article at indiewire.com, IFC have acquired the rights to screen the film via their IFC in Theaters platform, which simultaneously releases movies in theaters and on VOD. There's no mention in this article or others on the same story of whether a DVD release is planned yet, so I'm guessing not.
The president of IFC Entertainment, Jonathan Sehring, is quoted as saying, “we are so thrilled to be releasing this darkly funny and bittersweet film, which we consider amongst his best work. We think it's perfect for all our platforms.” And Solondz added, “The people at IFC Films are the swellest! This is going to be fun!”