Tuesday was Stateless MCP day—the rollout of MCP 2.0, or the 2026-07-28 Model Context Protocol specification to use the more formal but less memorable name. This is the most significant …

MCP dropped its session handshake for a stateless core, hardened OAuth, and made tool lists cacheable, with SDK adoption near half a billion downloads

Plus, a new deprecation policy ensures features aren't removed suddenly.