NIS America released an overview trailer for Danganronpa V3: Killing Harmony at Anime Expo 2017.
Danganronpa V3: Killing Harmony is due out for PlayStation 4 and PS Vita on September 26 in North America and September 29 in Europe, and for PC via Steam worldwide on September 26.
Source: Danganronpa V3: Killing Harmony overview trailer - Gematsu