A quick note from FamilySearch: At RootsTech 2020, FamilySearch launched an effort to create a new version of GEDCOM based on the 5.5.1 version that would include: 1) new expressivity, flexibility, and compatibility; 2) Zip packaging of associated images and other files with the related GEDCOM file; and 3) public access via a GitHub Repository. Many industry software providers and key influencers participated, and the initiative concluded May 15, 2021.
The newest version is called FamilySearch GEDCOM 7.0. General information can be found at GEDCOM.info. Technical information, specifications, tools, and guides can be found at GEDCOM.io.
The public GitHub repository is the forum for on-going discussions leading to future versions of FamilySearch GEDCOM.