Docs: Add changelog v0.9.0 (#11237)

docs/changelogs/index.md

@@ -3,6 +3,31 @@
 Wondering what's new in Gemini CLI? This document provides key highlights and
 notable changes to Gemini CLI.
 
+## v0.9.0 - Gemini CLI weekly update - 2025-10-06
+
+- 🎉 **Interactive Shell:** Run interactive commands like `vim`, `rebase -i`, or
+  even `gemini` 😎 directly in Gemini CLI:
+  - Blog:
+    [https://developers.googleblog.com/en/say-hello-to-a-new-level-of-interactivity-in-gemini-cli/](https://developers.googleblog.com/en/say-hello-to-a-new-level-of-interactivity-in-gemini-cli/)
+- **Install pre-release extensions:** Install the latest `--pre-release`
+  versions of extensions. Used for when an extension’s release hasn’t been
+  marked as "latest".
+  ([pr](https://github.com/google-gemini/gemini-cli/pull/10752) by
+  [@jakemac53](https://github.com/jakemac53))
+- **Simplified extension creation:** Create a new, empty extension. Templates
+  are no longer required.
+  ([pr](https://github.com/google-gemini/gemini-cli/pull/10629) by
+  [@chrstnb](https://github.com/chrstnb))
+- **OpenTelemetry GenAI metrics:** Aligns telemetry with industry-standard
+  semantic conventions for improved interoperability.
+  ([spec](https://opentelemetry.io/docs/concepts/semantic-conventions/),
+  [pr](https://github.com/google-gemini/gemini-cli/pull/10343) by
+  [@jerop](https://github.com/jerop))
+- **List memory files:** Quickly find the location of your long-term memory
+  files with `/memory list`.
+  ([pr](https://github.com/google-gemini/gemini-cli/pull/10108) by
+  [@sgnagnarella](https://github.com/sgnagnarella))
+
 ## v0.8.0 - Gemini CLI weekly update - 2025-09-29
 
 - 🎉 **Announcing Gemini CLI Extensions** 🎉