AG2 continues AutoGen's ConversableAgent model: agents collaborate through messages, while GroupChatManager selects the next speaker by round robin, manual choice, randomness, or an LLM.
AG2 v1.0.2 highlights: (1) AG2 agents can now be exposed as ACP agents, serving remote clients over HTTP/WebSocket; (2) A2A agent cards switch from plaintext to signed-and-verified, plus gRPC TLS transport; (3) LiveAgent adds ElevenLabs as a voice provider, and community extensions (Tenki sandbox, TealTiger governance middleware) land for the first time. No breaking changes.