The current json-schema.org version is 2020-12

[apps4uco]

The current version is 2020-12! The previous version was 2019-09.

https://json-schema.org/specification

[SamB]

Specifically, see https://json-schema.org/draft/2020-12/json-schema-core.html for the spec, and the following release notes which "discuss the changes impacting users and implementers":

• https://json-schema.org/draft/2019-09/release-notes
• https://json-schema.org/draft/2020-12/release-notes