The October 2026 release of Visual Studio Code 1.140 marks a milestone in agentic engineering. The headline feature, the Copilot Harness, provides a unified agent host process that maintains state across IDE windows, CLI tools, and mobile sessions. Most notably, Microsoft has launched HydraFusion in research preview—an adaptive system that orchestrates multiple LLMs (including GPT-5.6 and Claude 4) to collaborate on a single task, allowing one model to draft code while another critiques and refines it in real-time. This version also introduces certified MCP (Model Context Protocol) server support, enabling secure, standardized connections between agents and enterprise data silos.
Release News
October 2026