* Added and improved support and user experience for HCP Packer - [GH-11304](https://github.com/hashicorp/packer/pull/11304) [GH-11315](https://github.com/hashicorp/packer/pull/11315) [GH-11320](https://github.com/hashicorp/packer/pull/11320) [GH-11319](https://github.com/hashicorp/packer/pull/11319)
* Improved support and user experience for HCP Packer registry - [GH-11304](https://github.com/hashicorp/packer/pull/11304) [GH-11315](https://github.com/hashicorp/packer/pull/11315) [GH-11320](https://github.com/hashicorp/packer/pull/11320) [GH-11319](https://github.com/hashicorp/packer/pull/11319)
* core: Show successful message upon successful packer validate - [GH-11337](https://github.com/hashicorp/packer/pull/11337)
* core: Allow use in top level source variables in a build.source block - [GH-11318](https://github.com/hashicorp/packer/pull/11318)