The Model Context Protocol organization published the specification dated July 28, 2026, which represents the most significant change to the protocol since its creation. The key innovation is the transition to a stateless architecture, along with the introduction of a managed extensions system and tightened authorization mechanisms.
For developers using Amazon cloud infrastructure, support for the new version is already available via the AgentCore Gateway on the Bedrock platform. Activating the updated standard does not require complex migration and is performed by sending a single UpdateGateway request.
These changes aim to improve the security and scalability of interactions between artificial intelligence models and external data sources. Moving to the new standard allows for the elimination of risks associated with context storage and ensures stricter control over connected extensions.
editorial commentary
Why it matters
This update will likely become the new industry baseline for secure AI agent orchestration. The next observable signal will be the emergence of tools from other cloud providers supporting this specification. The main uncertainty remains the speed at which the community abandons older, stateful versions of the protocol.