In order to ensure the continued usefulness of OAIS (ISO 14721) and ISO 16363 any revision must remain backward compatible with regard to major terminology and concepts. Further, for consistency the general level of detail should not be changed nor should the standard be changed from a reference model to an implementation design. Archive implementation standards or implementation profiles or detailed archival process standards or protocols should be addressed, but not in this document. They would become separate standards and would be developed through separate CCSDS projects. A particular interest for the current OAIS update is to reduce ambiguities and to fill in any missing or weak concepts and to add useful terminology.