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+## New Query Tool and Vapi Voice Provider, Updates to Language Support and Error Handling
+
+1. **New Query Tool Feature and Knowledge Base Integration**
+
+* The API now supports a new query tool that allows assistants to search through knowledge bases. Add this tool to any assistant model by configuring it at `assistant.model.tools[type=query]` path.
+* You can now link knowledge bases to query tools, providing structured information sources for assistants to access. Define knowledge bases with a name, model, provider, description, and associated file IDs.
+
+<Accordion title='Example configuration for [`QueryTool`](https://api.vapi.ai/api#:~:text=QueryTool)'>
+```json
+{
+  "type": "query",
+  "async": false,
+  "server": {
+    "url": "https://api.example.com/query-handler"
+  },
+  "function": {
+    "name": "query_knowledge",
+    "description": "Query knowledge bases for information",
+    "parameters": {
+      "type": "object",
+      "properties": {
+        "query": {
+          "type": "string",
+          "description": "The query to search for"
+        }
+      },
+      "required": ["query"]
+    }
+  },
+  "knowledgeBases": [
+    {
+      "name": "Product Documentation",
+      "model": "gemini-1.5-flash",
+      "provider": "google",
+      "description": "Contains all product manuals",
+      "fileIds": ["file-123", "file-456"]
+    }
+  ]
+}
+```
+</Accordion>
+
+
+2. **New Voice Provider Support**
+
+A new voice provider "vapi" has been added with support for a voice called "Jordan" in [`FallbackVapiVoice`](https://api.vapi.ai/api#:~:text=FallbackVapiVoice). Configure it in our assistant fallback plans at `assistant.voice.fallbackPlan.voices`.
+
+<Frame caption="Vapi Voice Provider">
+    <img src="../static/images/changelog/vapi-voice-configuration.png" alt="Vapi Voice Provider" />
+</Frame>
+
+3. **Language Support Updates**
+
+Myanmar language ("my") has been added to supported languages, while "jp" and "mymr" codes have been removed. Use "ja" for Japanese language and "my" for Myanmar. Reference [`GladiaTranscriber`](https://api.vapi.ai/api#:~:text=GladiaTranscriber) for more language codes.
+
+4. **Error Handling Improvements**
+
+Added new error code `pipeline-error-11labs-transcriber-failed` for `ServerMessageStatusUpdate.endedReason` and `ServerMessageEndOfCallReport.endedReason`. Also added an explicit `failed` status for test suite runs in [`TestSuiteRun`](https://api.vapi.ai/api#:~:text=TestSuiteRun). These additions provide more detailed error reporting.
+
+5. **Azure OpenAI Model Update**
+
+The model `gpt-4o-2024-08-06-ptu` has been removed from Azure OpenAI credential schemas. Update any credential configurations that were using this model.
\ No newline at end of file
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