| # Preview release: v0.61.0-preview.0 |
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| Released: September 15, 2026 |
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|
| Our preview release includes the latest, new, and experimental features. This |
| release may not be as stable as our [latest weekly release](latest.md). |
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| To install the preview release: |
|
|
| ``` |
| npm install -g @google/gemini-cli@preview |
| ``` |
|
|
| ## Highlights |
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|
| - **Sandbox Isolation**: Enhanced filesystem boundaries and isolated runtime |
| state within the sandbox environments to restrict untrusted execution. |
| - **Prompt Injection Defense**: Prevented potential indirect prompt injection |
| vulnerabilities related to build file modifications and untrusted command |
| flags. |
| - **Flash Model ID Preservation**: Fixed core logic to properly preserve |
| explicit, versioned Flash model IDs without overriding them. |
| - **Agent Loop Reliability**: Resolved an issue where crucial `AgentLoopContext` |
| properties were discarded during object spread, stabilizing the main agent |
| loop. |
|
|
| ## What's Changed |
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|
| - Changelog for v0.60.0-preview.0 by @gemini-cli-robot in |
| [#29251](https://github.com/google-gemini/gemini-cli/pull/29251) |
| - chore(release): bump version to 0.61.0-nightly.20260908.gc647533d6 by |
| @gemini-cli-robot in |
| [#29254](https://github.com/google-gemini/gemini-cli/pull/29254) |
| - Changelog for v0.59.0 by @gemini-cli-robot in |
| [#29253](https://github.com/google-gemini/gemini-cli/pull/29253) |
| - fix(core): preserve explicit versioned Flash model IDs by @SandyTao520 in |
| [#29252](https://github.com/google-gemini/gemini-cli/pull/29252) |
| - fix(core): prevent indirect prompt injection via build file modifications and |
| untrusted flags by @villahernandez-coder in |
| [#29250](https://github.com/google-gemini/gemini-cli/pull/29250) |
| - fix(sandbox): harden filesystem boundaries and isolate runtime state by |
| @diegogodinezr in |
| [#29214](https://github.com/google-gemini/gemini-cli/pull/29214) |
| - fix(core): ensure AgentLoopContext properties are preserved across object |
| spread by @diegogodinezr in |
| [#29335](https://github.com/google-gemini/gemini-cli/pull/29335) |
|
|
| **Full Changelog**: |
| https://github.com/google-gemini/gemini-cli/compare/v0.60.0-preview.0...v0.61.0-preview.0 |
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