All export data sources that provide a "Supplier catalogs" parameter have been extended with a new parameter "Use all supplier catalogs."
With this new functionality, it is no longer needed to manually add each newly created supplier catalog to the list of selected catalogs within an existing export template. Instead, every new supplier catalog will be included automatically in your scheduled exports or search index update jobs. Note that this is a complementary addition, and the data source can still be used as before. All existing export templates and scheduled export jobs will remain valid and not change their behavior implicitly.