Terraform Releases

## 1.16.0 (August 26, 2026) NEW FEATURES: * Terraform now stores planned private data for providers, allowing provider-specific state to be preserved across plan and apply. ([#37986](https://github.com/hashicorp/terraform/issues/37986)) * `terraform_data`: The new `store` block can hold ephemeral and sensitive values across plan and apply. ([#38298](https://github.com/hashicorp/terraform/issues/38298)) * Providers can now use nested blocks as computed values ([#38305](https://github.com/hashicorp/terraform/issues/38305)) * import: `import` blocks inside modules are now supported. ([#38352](https://github.com/hashicorp/terraform/issues/38352)) * Terraform is now available as a pre-built binary for Linux s390x (zLinux). ([#38384](https://github.com/hashicorp/terraform/issues/38384)) * Resource action triggers can now use `on_failure` modes of `halt`, `taint`, or `continue`. ([#38722](https://github.com/hashicorp/terraform/issues/38722)) ENHANCEMENTS: * state show: The `state show` comman

## 1.15.9 (August 19, 2026) BUG FIXES: * validate: Child module validation has been fixed and will now raise errors or warning diagnostics for invalid blocks. (`list`, `import`, `backend`, and `cloud`) ([#38994](https://github.com/hashicorp/terraform/issues/38994)) NOTES: * Update go-slug to v0.18.3 to mitigate CVE-2026-14978, which is a Unicode normalization issue that could lead to files not being correctly excluded via `.terraformignore` from upload to a Terraform Enterprise or HCP Terraform during a run ([#39036](https://github.com/hashicorp/terraform/issues/39036))

## 1.16.0-rc2 (August 19, 2026) NEW FEATURES: * Terraform now stores planned private data for providers, allowing provider-specific state to be preserved across plan and apply. ([#37986](https://github.com/hashicorp/terraform/issues/37986)) * `terraform_data`: The new `store` block can hold ephemeral and sensitive values across plan and apply. ([#38298](https://github.com/hashicorp/terraform/issues/38298)) * Providers can now use nested blocks as computed values ([#38305](https://github.com/hashicorp/terraform/issues/38305)) * import: `import` blocks inside modules are now supported. ([#38352](https://github.com/hashicorp/terraform/issues/38352)) * Terraform is now available as a pre-built binary for Linux s390x (zLinux). ([#38384](https://github.com/hashicorp/terraform/issues/38384)) * Resource action triggers can now use `on_failure` modes of `halt`, `taint`, or `continue`. ([#38722](https://github.com/hashicorp/terraform/issues/38722)) ENHANCEMENTS: * state show: The `state show` co

## 1.16.0-rc1 (August 12, 2026) NEW FEATURES: * Terraform now stores planned private data for providers, allowing provider-specific state to be preserved across plan and apply. ([#37986](https://github.com/hashicorp/terraform/issues/37986)) * `terraform_data`: The new `store` block can hold ephemeral and sensitive values across plan and apply. ([#38298](https://github.com/hashicorp/terraform/issues/38298)) * Providers can now use nested blocks as computed values ([#38305](https://github.com/hashicorp/terraform/issues/38305)) * import: `import` blocks inside modules are now supported. ([#38352](https://github.com/hashicorp/terraform/issues/38352)) * Terraform is now available as a pre-built binary for Linux s390x (zLinux). ([#38384](https://github.com/hashicorp/terraform/issues/38384)) * Resource action triggers can now use `on_failure` modes of `halt`, `taint`, or `continue`. ([#38722](https://github.com/hashicorp/terraform/issues/38722)) ENHANCEMENTS: * state show: The `state show` co

## 1.17.0-alpha20260812 (August 12, 2026) ENHANCEMENTS: * command/init: Enrich log messages with provider versions ([#38918](https://github.com/hashicorp/terraform/issues/38918)) BUG FIXES: * funcs: pow and log no longer panic when result is not a number ([#38912](https://github.com/hashicorp/terraform/issues/38912)) * ephemeral: Terraform will now use and display diagnostics raised when _renewing_ an ephemeral resource. This may cause warnings to appear that previously were lost. We expect that any error diagnostics that were previously lost would have caused confusing downstream errors, so we do not anticipate this change to be breaking. ([#38989](https://github.com/hashicorp/terraform/issues/38989)) NOTES: * version: JSON output now includes a new `format_version` field, which will enable safer future changes of the command's JSON output format. It is assumed existing tooling ignores unknown fields and therefore this change should not be breaking in itself but we advice consumers to

## 1.16.0-beta2 (August 05, 2026) NEW FEATURES: * Terraform now stores planned private data for providers, allowing provider-specific state to be preserved across plan and apply. ([#37986](https://github.com/hashicorp/terraform/issues/37986)) * `terraform_data`: The new `store` block can hold ephemeral and sensitive values across plan and apply. ([#38298](https://github.com/hashicorp/terraform/issues/38298)) * Providers can now use nested blocks as computed values ([#38305](https://github.com/hashicorp/terraform/issues/38305)) * import: `import` blocks inside modules are now supported. ([#38352](https://github.com/hashicorp/terraform/issues/38352)) * Terraform is now available as a pre-built binary for Linux s390x (zLinux). ([#38384](https://github.com/hashicorp/terraform/issues/38384)) * Resource action triggers can now use `on_failure` modes of `halt`, `taint`, or `continue`. ([#38722](https://github.com/hashicorp/terraform/issues/38722)) ENHANCEMENTS: * state show: The `state show`

## 1.17.0-alpha20260729 (July 29, 2026) ENHANCEMENTS: * command/init: Enrich log messages with provider versions ([#38918](https://github.com/hashicorp/terraform/issues/38918)) BUG FIXES: * funcs: pow and log no longer panic when result is not a number ([#38912](https://github.com/hashicorp/terraform/issues/38912)) EXPERIMENTS: Experiments are only enabled in alpha releases of Terraform CLI. The following features are not yet available in stable releases. - The experimental "deferred actions" feature, enabled by passing the `-allow-deferral` option to `terraform plan`, permits `count` and `for_each` arguments in `module`, `resource`, and `data` blocks to have unknown values and allows providers to react more flexibly to unknown values. - `terraform test cleanup`: The experimental `test cleanup` command. In experimental builds of Terraform, a manifest file and state files for each failed cleanup operation during test operations are saved within the `.terraform` local directory. The `tes

## 1.16.0-beta1 (July 23, 2026) NEW FEATURES: * Terraform now stores planned private data for providers, allowing provider-specific state to be preserved across plan and apply. ([#37986](https://github.com/hashicorp/terraform/issues/37986)) * `terraform_data`: The new `store` block can hold ephemeral and sensitive values across plan and apply. ([#38298](https://github.com/hashicorp/terraform/issues/38298)) * Providers can now use nested blocks as computed values ([#38305](https://github.com/hashicorp/terraform/issues/38305)) * import: `import` blocks inside modules are now supported. ([#38352](https://github.com/hashicorp/terraform/issues/38352)) * Terraform is now available as a pre-built binary for Linux s390x (zLinux). ([#38384](https://github.com/hashicorp/terraform/issues/38384)) * Resource action triggers can now use `on_failure` modes of `halt`, `taint`, or `continue`. ([#38722](https://github.com/hashicorp/terraform/issues/38722)) ENHANCEMENTS: * state show: The `state show` co

## 1.16.0-alpha20260715 (July 15, 2026) NEW FEATURES: * Store PlannedPrivate data for providers ([#37986](https://github.com/hashicorp/terraform/issues/37986)) * New store block in terraform_data that can handle ephemeral and sensitive values ([#38298](https://github.com/hashicorp/terraform/issues/38298)) * Providers can now use nested blocks as computed values ([#38305](https://github.com/hashicorp/terraform/issues/38305)) * import: add support for import blocks inside modules ([#38352](https://github.com/hashicorp/terraform/issues/38352)) * We now produce builds for Linux s390x (zLinux) ([#38384](https://github.com/hashicorp/terraform/issues/38384)) * workspace: The `workspace list` command can now produce machine-readable output when supplied with the `-json` flag ([#38397](https://github.com/hashicorp/terraform/issues/38397)) * Resource action triggers can now use `on_failure` modes of `halt`, `taint`, or `continue` ([#38722](https://github.com/hashicorp/terraform/issues/38722)) EN

## 1.15.8 (July 8, 2026) BUG FIXES: * Fix `terraform init` error when installing providers sourced from a service-discovery alias advertised by the configured backend (such as `localterraform.com`) NOTES: * command/init: Provider installation was changed to enable future enhancements in the area. This effectively reverses the log message changes from v1.15. `initializing_provider_plugin_message` is being re-introduced to replace the short-lived two message types `initializing_provider_plugin_from_config_message` & `initializing_provider_plugin_from_state_message`. The change should not have any significant end-user impact aside from the command output. ([#38838](https://github.com/hashicorp/terraform/issues/38838)) * command/init: Provider installation was changed to enable future enhancements in the area. This partially reverses the init event order changes from v1.15; module installation will now occur after the backend is initialized. The change should not have any significant end-u