The Terraform AWS Provider has undergone significant changes with the release of version 3.0, introducing four major enhancements: updated Amazon Certificate Manager resources, removal of hashing from state storage, improved authentication ordering, and deprecation of Terraform 0.11. These changes aim to simplify configurations and improve the overall experience for users, while also consolidating example code to use Terraform 0.12 syntax. The provider team has worked hard on these improvements and invites feedback through GitHub Issues, with a recommended pinning of provider versions to protect against unexpected circumstances.