Adding release notes for 0.6 and 0.5 (#1523)

website/content/docs/releases/release-notes/v0_5_0.mdx

@@ -0,0 +1,29 @@
+---
+layout: docs
+page_title: v0.5.0
+description: |-
+  Boundary release notes for v0.5.0
+---
+
+# [Boundary v0.5.0](https://www.boundaryproject.io/downloads)
+
+The release notes below contain information about new functionality available in Boundary v0.5.0.
+To see a granular record of when each item was merged into the Boundary project, please refer to the [Changelog](https://github.com/hashicorp/boundary/blob/main/CHANGELOG.md).
+To learn about what Boundary consists of, we highly recommend you start at the [Getting Started Page](/docs/getting-started).
+
+Lastly, for instructions on how to upgrade an existing Boundary deployment to v0.5.0, please review Boundary’s [general upgrade guide](https://learn.hashicorp.com/tutorials/boundary/upgrade-version).
+
+## Boundary v0.5.0 Highlights
+
+**Event Logging:** 0.5.0 includes significant improvements to Boundary's event logging system with goal of giving operators greater visibility into system information in a well-defined, structured format.
+When enabled, event logs are the only type of logging Boundary performs, meaning standard system information and debug logs will no longer appear in stdout.
+The new structured event logs are filterable by event type and other expressions that users define. Legacy HCLog output is still supported through a user-configurable setting.
+
+For more about event logging usage, see our [documentation](https://www.boundaryproject.io/docs/configuration/events/overview).
+
+**Credential CRUD operations for Administrative Console:** The 0.5.0 release enables administration to configure Vault credential libraries and Vault credential set resources through the administrative console.
+Vault credential resources allows users to create Boundary sessions with credentials brokered by a Vault deployment.
+
+## What's Changed
+
+For more detailed information of all changes since 0.4.0, please refer to the [Changelog](https://github.com/hashicorp/boundary/blob/main/CHANGELOG.md)

website/content/docs/releases/release-notes/v0_6_0.mdx

@@ -0,0 +1,26 @@
+---
+layout: docs
+page_title: v0.6.0
+description: |-
+  Boundary release notes for v0.6.0
+---
+
+# [Boundary v0.6.0](https://www.boundaryproject.io/downloads)
+
+The release notes below contain information about new functionality available in Boundary v0.6.0 and the corresponding Boundary Desktop v1.3.0 and Boundary Terraform Provider v1.0.5 releases.
+To see a granular record of when each item was merged into the Boundary project, please refer to the [Changelog](https://github.com/hashicorp/boundary/blob/main/CHANGELOG.md).
+To learn about what Boundary consists of, we highly recommend you start at the [Getting Started Page](/docs/getting-started).
+
+Lastly, for instructions on how to upgrade an existing Boundary deployment to v0.6.0, please review Boundary’s [general upgrade guide](https://learn.hashicorp.com/tutorials/boundary/upgrade-version).
+
+## Boundary v0.6.0 Highlights
+
+**Permissions-based UI:** Boundary 0.6.0 dynamically tailors the administrator console to individual users’ permissions, ensuring users are presented only with actions and workflows that can succeed.
+
+**Linux Support for Boundary Desktop:** Boundary Desktop 1.3 adds support for Debian-based Linux distributions in addition to existing macOS and Windows support.
+
+**Managed group configurations via Terraform:** Managed groups can now be configured via Terraform using v1.0.5 of [Boundary's Terraform Provider](https://registry.terraform.io/providers/hashicorp/boundary/latest)
+
+## What's Changed
+
+For more detailed information of all changes since 0.5.0, please refer to the [Changelog](https://github.com/hashicorp/boundary/blob/main/CHANGELOG.md)

website/data/docs-nav-data.json

@@ -390,9 +390,17 @@
           {
             "title": "v0.4.0",
             "path": "releases/release-notes/v0_4_0"
+          },
+          {
+            "title": "v0.5.0",
+            "path": "releases/release-notes/v0_5_0"
+          },
+          {
+            "title": "v0.6.0",
+            "path": "releases/release-notes/v0_6_0"
           }
         ]
       }
     ]
   }
-]
+]