Run python3 dev/update_changelog.py --prev-version 3.8...

Signed-off-by: mlflow-app[bot] <mlflow-app[bot]@users.noreply.github.com>

Author: mlflow-app[bot]

CHANGELOG.md

@@ -1,5 +1,40 @@
 # CHANGELOG
 
+## 3.8.1 (2025-12-24)
+
+MLflow 3.8.1 includes several major features and improvements
+
+Features:
+
+- [Evaluation / Prompts / Tracing] Job backend: support job cancellation (#19565, @WeichenXu123)
+- [Tracing] Reasoning in Chat UI Anthropic  (#19541, @joelrobin18)
+- [Tracing] Reasoning in Chat UI OpenAI (#19535, @joelrobin18)
+- [UI] [ Gateway 7/10 ] Add Model select functionality for endpoint creation (#19477, @BenWilson2)
+- [UI] [ Gateway 6/10 ]Add Create endpoint page and enhance provider select (#19475, @BenWilson2)
+- [Tracking] fix: Add JupyterNotebookRunContext for Tracking local Jupyter notebook as the source (#19162, @iyashk)
+- [] Overview tab for GenAI experiments (#19521, @serena-ruan)
+- [UI] [ Gateway 5/10 ]Add endpoint listing page and tab layout (#19474, @BenWilson2)
+- [UI] [ Gateway 4/10 ] Add delete and update capabilities for API Keys (#19446, @BenWilson2)
+- [UI] [ Gateway 3/10 ] Add Create API Keys functionality (#19442, @BenWilson2)
+- [UI] [ Gateway 2/10 ] Create List API Keys landing page (#19441, @BenWilson2)
+- [Docs / Tracing / Tracking] [TypeScript SDK] Simplify Databricks auth by delegating to Databricks SDK (#19434, @simonfaltum)
+
+Bug fixes:
+
+- [Models / Scoring] fix(security): prevent command injection via malicious model artifacts (#19583, @ColeMurray)
+- [Evaluation] Fix structured outputs for databricks serving endpoints (#19572, @smoorjani)
+- [Models / Scoring] Add dict to PyFuncOutput type alias for ResponsesAgent/ChatAgent/ChatModel (#19560, @copilot-swe-agent)
+- [Tracking] Fix `enable_git_model_versioning` to work from subdirectories (#19529, @copilot-swe-agent)
+
+Documentation updates:
+
+- [Docs] Fix ML-59546 eval quickstart links to wrong place, add notebook version of eval quickstart (#19511, @achen530)
+- [Docs] Fix MLflow doc build failure (#19542, @WeichenXu123)
+
+Small bug fixes and documentation updates:
+
+#19600, #19555, #19400, @B-Step62; #19590, #19580, #19579, #19578, #19577, #19576, @serena-ruan; #19532, #19531, @hubertzub-db; #19453, #19452, @TomeHirata; #19539, @smoorjani; #19561, #19549, #19544, #19543, @copilot-swe-agent; #19523, @harupy; #19493, @alkispoly-db; #16372, @mohammadsubhani; #19522, @pmeier
+
 ## 3.8.0 (2025-12-19)
 
 MLflow 3.8.0 includes several major features and improvements