Anthropic's official X account @ClaudeDevs announced on July 28, 2026 that a new version of MCP (Model Context Protocol) called MCP 2026-07-28 is now live. The original announcement reads: 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.
What the Announcement Means
MCP is an open protocol that lets AI models connect to external tools and data sources. According to the announcement, this MCP 2026-07-28 release is the largest update to the protocol since its launch. The core change is that MCP is now stateless — meaning servers no longer need to retain state from previous requests and can instead handle each request independently.
What This Means for Users
Per the announcement, this change makes it easier to deploy and scale remote servers. Because servers no longer need to maintain per-client state, distributing requests across multiple servers or scaling server count up or down can become simpler. Developers running or planning remote MCP servers may want to take note of this update.
What the Announcement Does Not Cover
Specific details such as which features were added or changed, backward compatibility, migration steps, or the scope of this update were not included in the official announcement.
Please check Anthropic's official channels for the latest status.