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:

Ahead of the new, stateless MCP specification coming on July 28th, the team was hard at work releasing the first betas of the Typescript SDK v2.0.0 and Python SDK v2.0.0. This should make building MCP Servers and clients much easier. Please test it and give us feedback about ergonomics: