HashiCorp has released Terraform 0.14 in public beta, focusing on core functionality and stability improvements. The new version includes features such as sensitive input variables and derived sensitivity, a concise diff format, and an officially supported ARM64 release for Linux. To get started with Terraform 0.14, users can download the beta release and read the official guide, which covers topics such as workflow improvements, predictability, and decision-making. The release is currently in public beta and should not be used in production settings due to potential bugs and instability.