The first film, Kizumonogatari Part 1: Tekketsu, screened in Japan beginning on January 8, 2015, and the second film, Kizumonogatari II: Nekketsu-hen, opened in Japan on August 19.
The official website for the the Kizumonogatari film trilogy began streaming a trailer for the third and final film, Kizumonogatari III: Reiketsu-hen (Cold Blood), on Thursday.
The trailer highlights Araragi and Shinobu’s relationship (Note: The linked video is region-locked to Japan).