Disaster Report 4 Plus is getting its first post-story DLC in an update coming next weekend, Granzella announced on Twitter today. However, the specific date for the release has not been locked down yet.
Additionally, Granzella has clarified that the post-story DLC is split into two parts, with the one coming next week being Part 1. You can check out some short bits from the post-story DLC in the trailer in our previous report here.
Disaster Report 4 Plus is available in Japan on PlayStation 4, and is coming to Nintendo Switch in September 2019.