On December 2, 2019 the Integrated Program Management Data Analysis Report (IPMDAR), which was previously the IPMDR and, before that, the IPMR2, file format was released.
This is a final draft and no further updates to the specification are expected.
The specifications are going through final regulatory approval however, you can access them here. On this page you can also see a timeline of the revisions.
Need help with your Earned Value Management System (EVMS), or just help in general?