Today, 26th September 2024, CDS-Beta has officially become the new CDS: https://cds.climate.copernicus.eu/
Please see separate announcement for details: Goodbye legacy Climate Data Store, Hello New Climate Data Store (CDS)!
API users: there is no immediate action to take but you are advised to update the URL in your .cdsapirc file at your earliest convenience by 20th October 2024. Thank you.