docs: Blog post announcing V1.0

[darrelmiller]

No description provided.

[gemini-code-assist]

Summary of Changes

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This pull request adds a blog post announcing the release of A2A Protocol v1.0. The post highlights the key features and improvements in this release, emphasizing its production-readiness, enterprise support, and alignment with web architecture principles. It also clarifies the relationship between A2A and MCP and outlines the migration path for existing users.

Highlights

• A2A Protocol v1.0 Release: The A2A Protocol community is announcing the release of v1.0, which is the first stable, production-ready version of the open standard for communication between AI agents.
• Enterprise Requirements: The v1.0 release introduces capabilities aimed at production environments, including heterogeneous environment support, multi-tenancy support, signed Agent Cards, and improved security posture.
• Web-Aligned Architecture: A2A v1.0 aligns with core architectural principles of the web, such as statelessness and standard protocol bindings, for better scalability.
• Relationship with MCP: The release clarifies that A2A is complementary to the Model Context Protocol (MCP), not a replacement, with MCP focusing on tool and context integration at the agent level and A2A focusing on inter-agent communication.
• Migration: AgentCard has evolved in a backward-compatible way and now allows agents to advertise support for both existing 0.3 protocol behavior and v1.0 simultaneously, enabling progressive migration.

Changelog

• docs/announcing-1.0.md
  • Added a blog post announcing the release of A2A Protocol v1.0.

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[muscariello]

LGTM