The NSF Unidata THREDDS development team announced the THREDDS Data Server (TDS) version 5.6 on January 22nd, 2024. This release contains a number of security upgrades to third party libraries, a variety of bug fixes, and several new features and improvements. It is recommended that all TDS users upgrade to this version. For more information about the release, including important upgrade instructions, please see the GitHub release page. Artifacts can be obtained from the downloads section of the NSF Unidata website.