GitHub Copilot CLI—GitHub's AI assistant for the terminal—introduced an experimental feature called Rubber Duck that pairs your primary AI model with an independent reviewer from a completely different AI vendor. The goal is to catch early planning mistakes before they compound into harder-to-fix downstream errors, a known weakness of single-model AI agents. In performance testing on real-world coding problems, combining Claude Sonnet with Rubber Duck closed 74.7% of the performance gap between Sonnet and the more capable Opus tier.

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VS Code transitioned to a weekly stable release schedule starting with version 1.111 in March 2026, moving away from its previous monthly cadence. Versions 1.112 and 1.113 are the second and third releases under this new schedule, introducing integrated browser debugging, MCP (Model Context Protocol) server sandboxing, Copilot CLI agent permissions, and chat workflow improvements. This article details the most significant technical changes in both releases.

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Visual Studio Code version 1.109 introduces agent orchestrations — a feature that transforms the IDE into a multi-agent development platform. You can now create custom agents that collaborate, delegate tasks to specialized subagents, and execute complex workflows autonomously. This article explains the concept and demonstrates agent orchestration with a simple example. I'll also share my opinion on Microsoft's concept of agent orchestrations. It's not particularly favorable.

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