core + attic (Attic Area): these terms have been either deprecated from the core or extentions, or removed from pending as not accepted into the full vocabulary.

releasedEvent

Canonical URL: http://schema.org/releasedEvent

Thing > Property > releasedEvent

The place and time the release was issued, expressed as a PublicationEvent.

Usage: Between 10 and 100 domains
Values expected to be one of these types
PublicationEvent
Used on these types
CreativeWork

Schema Version 3.4