What changed
Microsoft released Agent Framework in preview for .NET and Python, combining agent abstractions, multi-agent workflows, hosting, OpenTelemetry and evaluation patterns derived from AutoGen and Semantic Kernel.
Why it matters
A shared framework reduces duplicated orchestration code and gives Microsoft developers a clearer migration path from two overlapping agent stacks.
What to do
Test one bounded workflow behind an adapter, export traces and evaluations, and avoid coupling production interfaces to preview APIs until they stabilize.
Caveat
The October release was explicitly preview software; package names, behavior and migration guidance could change before a stable production release.