The upcoming versions of the plugin protocol (5.7/6.7) include support for ephemeral resource types. The terraform-plugin-sdk Go module will not be receiving this feature, however this Go module must be updated to handle the new RPCs with errors.
Provider developers can still implement ephemeral resource types in their terraform-plugin-sdk based providers by following the framework migration documentation to introduce terraform-plugin-mux, which then will enable terraform-plugin-framework based ephemeral resource implementations.
Refs:
The upcoming versions of the plugin protocol (5.7/6.7) include support for ephemeral resource types. The
terraform-plugin-sdkGo module will not be receiving this feature, however this Go module must be updated to handle the new RPCs with errors.Provider developers can still implement ephemeral resource types in their
terraform-plugin-sdkbased providers by following the framework migration documentation to introduceterraform-plugin-mux, which then will enableterraform-plugin-frameworkbased ephemeral resource implementations.