Since the launch of Siri on the iPhone 10 years ago, we have witnessed a proliferation of voice-enabled digital assistants for use for mobile, home, car and other use cases. Yet one cannot say that AI agents have profoundly changed the way we live. In this talk, I will review the recent advances in conversational AI agents, relevant core technologies and hype as well as social impact/issues. I will also provide a subjective vision featuring the next-generation agent (“AI 2.0”) as part of the “Metaverse Revolution”, and discuss opportunities, pitfalls and challenges.