The PostgreSQL community tries to keep a list of new features that are added in its feature matrix:

https://www.postgresql.org/about/featurematrix/

This is not an exhaustive list, but it contains a lot. You would still have to cull information from release notes:

https://www.postgresql.org/docs/release/

Or looking at the documentation page for a command (e.g. SELECT), or as per other suggestions, reading blogs/articles.

This earliest this will be available is PostgreSQL 14; it was not added to PostgreSQL 13.

Nice to see improvements on this extension to leverage PostgreSQL to schedule jobs!

Thanks. We're open to the new ideas. Feel free to share some :)