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Oct 12, 2026
GitHub Copilot for JetBrains adds model and MCP startup controls
The October 10 plugin update lets enterprises set a starting model and lets developers stop MCP servers from launching automatically. Neither control removes the need to govern model access, server allowlists or agent-made fixes.
Sep 30, 2026
ChatGPT plugins can now react to MCP events, with signed webhooks and clear limits
OpenAI's DevDay MCP Events launch lets a plugin start a ChatGPT workflow when its server reports a relevant change. The current integration uses verified, signed webhooks and leaves several mechanisms in the broader draft specification unsupported.
Sep 30, 2026
ChatGPT plugin extensions add sidebar apps and file viewers; Free and Go web support is still coming
OpenAI's DevDay plugin extensions give developers new places to put an MCP-backed app inside ChatGPT. The developer docs distinguish fullscreen sidebar apps, conversation panels and file viewers, while narrowing the rollout for Free and Go users on the web.