announced the release of  the Wikibase extension Wikibase EDTF. This means that Wikibase can now support the EDTF standard.

EDTF stands for Extended Date Time Format. The EDTF standard adds new date formats to ISO 8601-2019 2, including support for intervals, sets, uncertainty, precision and seasons. It was published by the US Library of Congress in 2019, after joint creation of the standard with the wider bibliographic community.

Learn more in the offical announcement.