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Terraform 1.15.0

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Release notes

note: no summary for this older release

We summarize recent releases. The original release notes for this version are below.

release-notesgithub.com/hashicorp/terraform · 112 lines
  1. ## 1.15.0 (April 29, 2026)
  4. NEW FEATURES:
  6. * We now produce builds for Windows ARM64 ([#32719](https://github.com/hashicorp/terraform/issues/32719))
  8. * You can set a `deprecated` attribute on variable and output blocks to indicate that they are deprecated. This will produce warnings when passing in a value for a deprecated variable or when referencing a deprecated output. ([#38001](https://github.com/hashicorp/terraform/issues/38001))
  10. * backend/s3: Support authentication via `aws login` ([#37976](https://github.com/hashicorp/terraform/issues/37976))
  12. * validate: The validate command now checks the `backend` block. This ensures the backend type exists, that all required attributes are present, and that the backend's own validation logic passes. ([#38021](https://github.com/hashicorp/terraform/issues/38021))
  14. * `convert` function, which allows for precise inline type conversions ([#38160](https://github.com/hashicorp/terraform/issues/38160))
  16. * Terraform now supports variables and locals in module source and version attributes ([#38217](https://github.com/hashicorp/terraform/issues/38217))
  19. ENHANCEMENTS:
  21. * config: `output` blocks now can have an explicit type constraints ([#36411](https://github.com/hashicorp/terraform/issues/36411))
  23. * ssh-based provisioner (file + remote-exec): Re-enable support for PowerShell ([#37794](https://github.com/hashicorp/terraform/issues/37794))
  25. * terraform init log timestamps include millisecond precision ([#37818](https://github.com/hashicorp/terraform/issues/37818))
  27. * init: skip dependencies declared in development override. This allows you to use `terraform init` with developer overrides and install dependencies that are not declared in the override file. ([#37884](https://github.com/hashicorp/terraform/issues/37884))
  29. * Terraform Test: Allow functions within mock blocks ([#34672](https://github.com/hashicorp/terraform/issues/34672))
  31. * improve detection of deprecated resource attributes / blocks ([#38077](https://github.com/hashicorp/terraform/issues/38077))
  33. * Deprecation messages providers set on resources / blocks / attributes are now part of the deprecation warning ([#38135](https://github.com/hashicorp/terraform/issues/38135))
  35. * Include which attribute paths are marked as sensitive in list_start JSON logs ([#38197](https://github.com/hashicorp/terraform/issues/38197))
  37. * Add input variable validation for Stacks ([#38240](https://github.com/hashicorp/terraform/issues/38240))
  39. * When comparing a container value to null, only top level marks are now considered for the result. ([#38270](https://github.com/hashicorp/terraform/issues/38270))
  41. * As part of supporting variables in module sources, most commands now accept variable values ([#38276](https://github.com/hashicorp/terraform/issues/38276))
  44. BUG FIXES:
  46. * testing: File-level error diagnostics are now included in JUnit XML skipped test elements, ensuring CI/CD pipelines can detect validation failures ([#37801](https://github.com/hashicorp/terraform/issues/37801))
  48. * A refresh-only plan could result in a non-zero exit code with no changes ([#37406](https://github.com/hashicorp/terraform/issues/37406))
  50. * cli: Fixed crash in `terraform show -json` when plan contains ephemeral resources with preconditions or postconditions ([#37834](https://github.com/hashicorp/terraform/issues/37834))
  52. * cli: Fixed `terraform init -json` to properly format all backend configuration messages as JSON instead of plain text ([#37911](https://github.com/hashicorp/terraform/issues/37911))
  54. * `state show`: The `state show` command will now explicitly fail and return code 1 when it fails to render the named resources state ([#37933](https://github.com/hashicorp/terraform/issues/37933))
  56. * apply: Terraform will raise an explicit error if a plan file intended for one workspace is applied against another workspace ([#37954](https://github.com/hashicorp/terraform/issues/37954))
  58. * lifecycle: `replace_triggered_by` now reports an error when given an invalid attribute reference that does not exist in the target resource ([#36740](https://github.com/hashicorp/terraform/issues/36740))
  60. * backend: Fix nil pointer dereference crash during `terraform init` when the destination backend returns an error ([#38027](https://github.com/hashicorp/terraform/issues/38027))
  62. * stacks: send progress events if the plan fails for better UI integration ([#38039](https://github.com/hashicorp/terraform/issues/38039))
  64. * stacks: component instances should report no-op plan/apply. This solves a UI inconsistency with convergence destroy plans ([#38049](https://github.com/hashicorp/terraform/issues/38049))
  66. * backend/http: Return conflicting lock info from HTTP backend instead of the lock that failed to be taken ([#38144](https://github.com/hashicorp/terraform/issues/38144))
  68. * states: fixed a bug that caused Terraform to be unable to identify when two states had different output values. This may have caused issues in specific circumstances like backend migrations. ([#38181](https://github.com/hashicorp/terraform/issues/38181))
  70. * cloud: terraform cloud and registry discovery network requests are now more resilient, making temporary network or service related errors less common ([#38064](https://github.com/hashicorp/terraform/issues/38064))
  72. * Enable formatting of `.tfquery.hcl` files by `terraform fmt` ([#38398](https://github.com/hashicorp/terraform/issues/38398))
  74. * Fix `validate` not returning JSON for some early diagnostics ([#38400](https://github.com/hashicorp/terraform/issues/38400))
  76. * Fix Terraform Stacks plugin installation error ([#38406](https://github.com/hashicorp/terraform/issues/38406))
  79. NOTES:
  81. * command/init: Provider installation was refactored to enable future enhancements in the area. This results in different order of operations during init and 2 new log messages replacing one (`initializing_provider_plugin_message`). The change should not have any end-user impact aside from the `init` command output. ([#38227](https://github.com/hashicorp/terraform/issues/38227))
  84. UPGRADE NOTES:
  86. * backend/s3: The `AWS_USE_FIPS_ENDPOINT` and `AWS_USE_DUALSTACK_ENDPOINT` environment variables now only respect `true` or `false` values, aligning with the AWS SDK for Go. This replaces the previous behavior which treated any non-empty value as `true`. ([#37601](https://github.com/hashicorp/terraform/issues/37601))
  89. ## Previous Releases
  91. For information on prior major and minor releases, refer to their changelogs:
  93. - [v1.14](https://github.com/hashicorp/terraform/blob/v1.14/CHANGELOG.md)
  94. - [v1.13](https://github.com/hashicorp/terraform/blob/v1.13/CHANGELOG.md)
  95. - [v1.12](https://github.com/hashicorp/terraform/blob/v1.12/CHANGELOG.md)
  96. - [v1.11](https://github.com/hashicorp/terraform/blob/v1.11/CHANGELOG.md)
  97. - [v1.10](https://github.com/hashicorp/terraform/blob/v1.10/CHANGELOG.md)
  98. - [v1.9](https://github.com/hashicorp/terraform/blob/v1.9/CHANGELOG.md)
  99. - [v1.8](https://github.com/hashicorp/terraform/blob/v1.8/CHANGELOG.md)
  100. - [v1.7](https://github.com/hashicorp/terraform/blob/v1.7/CHANGELOG.md)
  101. - [v1.6](https://github.com/hashicorp/terraform/blob/v1.6/CHANGELOG.md)
  102. - [v1.5](https://github.com/hashicorp/terraform/blob/v1.5/CHANGELOG.md)
  103. - [v1.4](https://github.com/hashicorp/terraform/blob/v1.4/CHANGELOG.md)
  104. - [v1.3](https://github.com/hashicorp/terraform/blob/v1.3/CHANGELOG.md)
  105. - [v1.2](https://github.com/hashicorp/terraform/blob/v1.2/CHANGELOG.md)
  106. - [v1.1](https://github.com/hashicorp/terraform/blob/v1.1/CHANGELOG.md)
  107. - [v1.0](https://github.com/hashicorp/terraform/blob/v1.0/CHANGELOG.md)
  108. - [v0.15](https://github.com/hashicorp/terraform/blob/v0.15/CHANGELOG.md)
  109. - [v0.14](https://github.com/hashicorp/terraform/blob/v0.14/CHANGELOG.md)
  110. - [v0.13](https://github.com/hashicorp/terraform/blob/v0.13/CHANGELOG.md)
  111. - [v0.12](https://github.com/hashicorp/terraform/blob/v0.12/CHANGELOG.md)
  112. - [v0.11 and earlier](https://github.com/hashicorp/terraform/blob/v0.11/CHANGELOG.md)

view on githubimported 2026-09-28 via github-releases