Massive MIMO is seen as a key enabling technology for 5G in terms of capacity improvement and coverage enhancement. Major advances have been made by 3GPP and mobile vendors in order to bring Massive MIMO to reality. At the same time, further Massive MIMO technology evolution is also being continued to satisfy higher network requirements such as extremely high data rates for emerging high-definition videos and AR/VR services, friendly and consistent mobile UE experience, ultra-low latency and super dense connectivity. In this panel, we will bring leading experts to discuss the potential evolution directions of the Massive MIMO technology towards the future. As such, the following topics shall be covered by the panel: High-efficiency CSI acquisition for numerous scenarios, such as low-overhead for multi-user multiplexing, robustness for high-speed mobility, and unified FDD/TDD by virtue of channel reciprocity. User centric no cell (UCNC) deployment, such as powerful interference suppression precoding and intelligent coordinated transmission scheme. Agile beam management for mmWave and mobility, such as blockage prediction and fast intra-cell and inter-cell beam switching. AI and ML, expected to be the foundation for intelligent air interface design of massive MIMO transceivers. Novel antenna system architectures, such as extremely large aperture arrays (ELAA) and smart surfaces (e.g., reconfigurable intelligent surface (RIS), intelligent reflecting surface (IRS) and large intelligent surface (LIS)), and corresponding communication system design.