Heraclitus II is a framework for ontology management and evolution in information management systems. It uses a temporal ontology model based on TAU that supports modeling facts with transaction and valid times. The framework represents ontologies as multiple layers from generic to domain-specific. Ontology evolution in Heraclitus II captures changes over time, preserves consistency, and propagates changes both within and across ontologies. The framework aims to provide transparency in the construction and evolution of ontologies used in information management.