* cli: The (currently-experimental) `terraform add` generates a starting point for a particular resource configuration. ([#28874](https://github.com/hashicorp/terraform/issues/28874))
* config: Terraform now checks the syntax of and normalizes module source addresses (the `source` argument in `module` blocks) during configuration decoding rather than only at module installation time. This is largely just an internal refactoring, but a visible benefit of this change is that the `terraform init` messages about module downloading will now show the canonical module package address Terraform is downloading from, after interpreting the special shorthands for common cases like GitHub URLs. ([#28854](https://github.com/hashicorp/terraform/issues/28854))
* core: Fixed an issue where provider configuration input variables were not properly merging with values in configuration ([#29000](https://github.com/hashicorp/terraform/issues/29000))
