MCP 2026-07-28 is live and it's the largest update to the protocol since launch. MCP is now stateless, making it easier to deploy and scale remote servers. https://claude.com/blog/bringing-mcp-2026-07-28-to-claude
MCP 2026-07-28 spec: stateless core, coming to Claude | Claude by AnthropicThe MCP 2026-07-28 spec is live, moving the Model Context Protocol to a stateless core with standardized extensions and hardened auth. Support is rolling out across Claude products soon. See what's new and how MCP is advancing in Claude.claude.com