Thrilled to announce the MCP 2026-07-28 release. It is one of MCP's biggest yet, built on 18 months of lessons learned. A few highlights: ★ MCP is now stateless, with semantics for multi-round-trip requests. Serving MCP just got much simpler and more scalable. ★ MCP now has extensions. MCP Apps, Tasks, Enterprise Managed Auth, and more. Domain-specific ways to use MCP, plus room for experimental additions. ★ Python, Typescript, C# (soon) SDKs released a v2.0.0 for the new spec with improved ergonomics! But the biggest highlight for me: this release is a true community effort. Individuals and companies alike — Anthropic, Google, Microsoft, OpenAI, and many others helped shape this specification. And there's much more. Full details: