The UTG project is scheduled to replace existing vocabulary maintenance processes (including harmonization) for HL7 internationally published normative standards in mid 2020. Additional information about project details, requirements, project management, and documentation can be accessed at the Unified Terminology Governance Project (UTG) Page
The second UTG session geared towards the HL7 community can be found below:
HL7 Education on Demand (free access): https://www.pathlms.com/hl7/courses/22235
HL7 YouTube: https://youtu.be/iuc6PAsmVxY
Please see https://terminology.hl7.org/ for the UTG landing page.