The next MCP spec lands as a release candidate

The Model Context Protocol's 2026-07-28 spec is now a release candidate and it is the biggest revision since launch. A stateless core lets servers scale on plain HTTP, an Extensions framework adds Tasks and server-rendered MCP Apps, and authorization gets aligned with OAuth and OpenID Connect.

Source: Model Context Protocol BlogRead the original

MCP has gone from a niche idea to plumbing the whole ecosystem leans on, and the 2026-07-28 spec is the largest rework so far. The release candidate is out ahead of a final ship date later in July.

A stateless protocol core that runs on ordinary HTTP infrastructure
An Extensions framework, including Tasks for long-running work
MCP Apps for server-rendered UI inside the client
Authorization hardened around OAuth and OpenID Connect, plus a deprecation policy

Our take

A stateless core is the change that matters for anyone running MCP servers in production. It is the difference between a demo and something you can actually scale.

This is a Setuproll summary written in our own words. For the full details, head to the source.

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