MCP News

This feed includes only recent releases, roughly from the last 12 months, not the full historical archive. That is why a long-established product may have only a few news items.

5 news

MCP
Final MCP specification release 2026-07-28: stateless protocol approved

The RC from May 21, 2026 became a stable spec with no material changes: initialize/Mcp-Session-Id were removed, a unified subscriptions/listen flow replaced HTTP GET and resources/subscribe, server/discover is mandatory, Roots/Sampling/Logging and the HTTP+SSE transport are deprecated (with a 12-month deprecation window). Multi Round-Trip Requests was added (resultType: input_required) to replace server-initiated requests, and JSON-RPC error code allocation policy was defined (-32020 to -32099 reserved for MCP).

Kafka is inherently stateful (consumer offsets, partitions); MCP removes server-side session state to enable scaling behind a standard load balancer without sticky sessions Apache Kafka →
MCP
Beta SDK for MCP 2026-07-28: Python, TypeScript, Go, C#

Four Tier 1 SDKs have received beta releases for the new spec: Python mcp v2.0.0b1, TypeScript v2 (split packages), Go v1.7.0-pre.1, and C# v2.0.0-preview.1. They implement a stateless architecture, Multi Round-Trip Requests, routing headers Mcp-Method/Mcp-Name, and standard JSON-RPC error codes. Migration to v2 is optional, and existing servers continue to work.

beta mcp v2.0.0b1 for Python SDK Python →beta C# SDK v2.0.0-preview.1 C# / .NET →
MCP
MCP spec release candidate 2026-07-28: stateless core, MCP Apps, tighter authorization

RC was locked on 2026-05-21, and the spec final is 2026-07-28 (a 10-week validation window). The initialize/initialized handshake and the Mcp-Session-Id header were removed, so the server runs behind a standard round-robin load balancer without sticky sessions. Tasks were moved out of core into an optional extension. The new MCP Apps extension provides server-side UI in a sandboxed iframe with JSON-RPC. A formal deprecation policy was introduced (Active → Deprecated → Removed, minimum 12 months); Roots, Sampling, and Logging are marked for removal.

Header-based routing and OAuth/OIDC hardening without sticky sessions is a pattern long implemented in the gateway layer before MCP LLM & Security Gateway →
MCP
MCP spec 2025-11-25: async Tasks, Extensions framework, sampling with tool-calling

Protocol anniversary: experimental Tasks (polling for long-running operations), the Extensions framework for optional modules outside the core spec, OAuth Client ID Metadata Documents for simplified client registration, URL-mode elicitation, sampling with tool-calling support (server-side agent loops). The registry has grown to ~2,000 servers (+407% since September), with 2,900+ contributors in Discord.

Async processing with status tracking via polling is a pattern message queues like Kafka have used for decades Apache Kafka →
MCP
Public MCP Registry Preview

registry.modelcontextprotocol.io is now open as the central community-driven MCP server registry, API freeze v0.1, with no data-retention guarantees before GA.

n8n has had its own marketplace of community nodes and templates for a long time; MCP is only now building an equivalent for its ecosystem n8n →

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