PREMIS Data Dictionary for Preservation Metadata: Approved Changes for version 3.0

PREMIS Data Dictionary for Preservation Metadata: Approved Changes for version 3.0. Library of Congress.  November 24, 2014.
The following changes were approved for PREMIS version 3.0:

• Make Intellectual Entity another category of Object. 
• Define preservationLevelType to indicate the type of preservation functions expected to be applied to the object for the given Preservation level.
• AgentVersion was added to record the version of software Agents
• The data model was changed so that Environments can be described and preserved reusing the Object entity
• Physical Objects can be described as representations and be related to digital objects.
• A value of unknown will be added to compositionLevel and format if the information is not available.

Digital Preservation Matters.