Model Context Protocol Publishes 2026-07-28 Spec Release Candidate — Largest Revision Since Launch

Model Context Protocol Blog·medium signal

The MCP project published the release candidate for its 2026-07-28 specification, described as the largest revision since the protocol launched, with the final spec due July 28. Governance has moved to the Linux Foundation and Streamable HTTP has made remote MCP mainstream, with 14,000+ servers now available. For builders, the RC is the window to test client/server changes before the spec freezes.