GeoNetwork 4.2.2 change notes
Authentication / OAuth2 OpenId Connect Single Sign-on and also support for OIDC Bearer tokens
Search / Aggregations / Add icon decorator
Search / Autocomplete improvements
Indexing / Add analyzer for Dutch
Indexing / Improve performance
Editor / Easier configuration for custom editor
Feature catalogue now provides a table of content when multiple tables are described.
Feature catalogue / Use ISO19115-3 instead of ISO19110
Admin / Improve layout for settings
CSW / Improve DCAT support
INSPIRE / Fix import from Re3gistry
GitHub link
https://github.com/geonetwork/core-geonetwork/releases
Download
https://sourceforge.net/projects/geonetwork/files/GeoNetwork_opensource/v4.2.2/
So I have been working with GeoNetwork for few days and installation is a real pain in the ***. I could not find any other robust and open-source geo-data cataloging software with search capability. My system still shows some errors but that will be fine.