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Microsoft 365 Agents Toolkit v6.6.0 just dropped and it's a big one. 🏛️ GCC-M support 🧠 Embedded knowledge for Declarative Agents 🔌 MCP going GA 🗑️ 61 templates removed Here's what you need to know. 🧵 👇

[2] 🏛️ GCC-M support is finally here. If you're building Microsoft Teams apps or Declarative Agents for government customers, you can now target GCC-M environments directly from ATK. GCC High & DoD are on the roadmap.

[3] 🧠 Embedded knowledge for Declarative Agents is the highlight for me. Package SOPs, reference docs, and product documentation directly inside your agent. They deploy and version together. No SharePoint or OneDrive connections required.

[5] 🗑️ Microsoft removed 61 project templates from ATK. Notification bots, link unfurling, message extensions, dashboard tabs, SPFx web parts... all gone. The toolkit is consolidating around Declarative Agents, Custom Engine Agents, and Foundry Agents.

[6] This template cleanup is a clear signal: Microsoft sees the future of M365 development as agent-centric. If you're still building with the old patterns, now's the time to start learning the new approach.