- Adds built‑in TF_TOKEN environment variable support, precondition/postcondition blocks, and a replace_triggered_by lifecycle argument for richer validation and resource replacement.
- Imposes breaking security requirements: TLS 1.2 only, disallows SHA‑1 CA certificates, requires Linux kernel ≥ 2.6.32, and deprecates third‑party credentials helper in favor of native support.
- Includes many enhancements and bug fixes such as improved error messages, AzureRM backend authentication updates, SSH over HTTP proxy support, refined plan output, and corrected variable/type handling.
Community impact
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