The document provides information on a supplement being developed for the Decisive Action Training Environment (DATE) called the DATE Operational Environment Assessment (OEA) Supplement - Pirtuni. The supplement will include an OEA of a fictional country called Pirtuni overlaid on the real-world terrain of Ukraine, along with a strategic setting section providing regional context. Developing the supplement as optional content will not disturb the existing DATE product and will provide additional options for commanders to tailor training. The supplement is scheduled for publication at the end of 2016, while the next official release of DATE 3.0 is scheduled for late spring 2017. Questions about DATE products should be directed to Angela M. Wilkins.