Microsoft Agent Framework hit 1.10.0 with breaking changes. AutoGen and Semantic Kernel are now one product.

Microsoft shipped dotnet-1.10.0 today. This is the release where AutoGen and Semantic Kernel officially converge into a single production framework.

Key changes:
- A2A session protocol with referenced task IDs
- MCP 1.2.0 support
- Auto-approval heuristics for tool calls
- GitHub Copilot SDK v1.0.0 migration
- Hosted agent samples with various auth flows

The framework is now at 11.3K stars, 1.9K forks, 150 contributors. This is no longer experimental. Enterprise teams are building on it.

Breaking changes mean: if you have approval gates in your agent pipeline, audit them before upgrading. The auto-approval rules will bypass manual review for certain tool calls.

Source: GitHub Release, Microsoft DevBlogs