Update changelog

Author: hc-github-team-tf-provider-devex

.changes/0.29.0-alpha.1.md

@@ -0,0 +1,9 @@
+## 0.29.0-alpha.1 (July 08, 2025)
+
+NOTES:
+
+* This alpha pre-release contains the protocol definitions and Go type definitions for list resources, which are a new type of resource. ([#512](https://github.com/hashicorp/terraform-plugin-go/issues/512))
+* A `ProviderServerWithListResource` can be used with the `terraform query` subcommand in Terraform 1.13.0-alpha20250708 and later to search unmanaged infrastructure. ([#512](https://github.com/hashicorp/terraform-plugin-go/issues/512))
+* The list resource protocol definitions are considered experimental and may change up until general availability. ([#512](https://github.com/hashicorp/terraform-plugin-go/issues/512))
+* tfprotov5+tfprotov6: An upcoming release will require the `ValidateListResourceConfig` and `ListResource` implementations as part of `ProviderServer`. ([#514](https://github.com/hashicorp/terraform-plugin-go/issues/514))
+

.changes/unreleased/NOTES-20250703-163629.yaml

@@ -1,3 +1,12 @@
+## 0.29.0-alpha.1 (July 08, 2025)
+
+NOTES:
+
+* This alpha pre-release contains the protocol definitions and Go type definitions for list resources, which are a new type of resource. ([#512](https://github.com/hashicorp/terraform-plugin-go/issues/512))
+* A `ProviderServerWithListResource` can be used with the `terraform query` subcommand in Terraform 1.13.0-alpha20250708 and later to search unmanaged infrastructure. ([#512](https://github.com/hashicorp/terraform-plugin-go/issues/512))
+* The list resource protocol definitions are considered experimental and may change up until general availability. ([#512](https://github.com/hashicorp/terraform-plugin-go/issues/512))
+* tfprotov5+tfprotov6: An upcoming release will require the `ValidateListResourceConfig` and `ListResource` implementations as part of `ProviderServer`. ([#514](https://github.com/hashicorp/terraform-plugin-go/issues/514))
+
 ## 0.28.0 (May 21, 2025)
 
 BREAKING CHANGES: