You can see the phrases "Initial support" and "Supported" throughout this Veracode Packaging Requirements publication. They refer to two different development phases at which Veracode releases scan support for a language or framework.
Indicates that Veracode has implemented initial coverage for a new version of a language or platform or a new framework. Support for new functionality in this framework, language, or platform version is not fully implemented and may affect the quality of your scan results.
Indicates that Veracode has implemented enhanced coverage for a framework, language, or platform. The Veracode security research team has analyzed the supported technology for security risks, and checks have been added for functionality in the framework or language/platform version to improve findings. Veracode uses the relevant artifacts uploaded with the application, including configuration files and other metadata, to analyze the application.