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+# What's New: Week of September 7, 2026
+
+1. **Chat Tests Your Draft**: In the assistant editor, Chat now runs your current unsaved configuration instead of the published version, so you can test your edits before publishing.
+
+2. **Duplicate Simulation Suites**: You can now duplicate an existing [simulation suite](/observability/simulations-overview).
+
+3. **Model Retirement Notices**: You now receive an email the day before a model your assistant uses is retired.