Gemini CLI v0.66.0 Adds MCP OAuth Private-Network Option
AI summary
Gemini CLI v0.66.0 was released, according to the Gemini CLI Releases notes. The update adds opt-in private network endpoints for MCP OAuth flows, along with fixes for synchronized output and spinner rendering, Windows diff-command argument formatting, and other CLI and UI issues; it also updates the roadmap and adds a banner stating that Gemini CLI is not optimized for Gemini 4.
In-depth insight
The release expands Gemini CLI's MCP OAuth networking options and addresses several user-facing CLI and UI issues, making it a substantive but incremental update to an AI developer tool.