Today during their Anime Expo panel Viz Media announced that they have acquired the rights to both the K: Missing Kings anime movie and the second season of the anime series, K: Return of Kings. It is worth noting that Viz Media originally licensed and released the first season of K back in 2014 and that Eleven Arts previously screened the film in theaters in North America that same year.
Currently Viz Media has no set release date for K: Missing Kings but we did review the initial screening of the film. As for K: Return of Kings, the second season is set to premiere sometime in October.