This paper presents a comprehensive overview of next generation advanced transceiver (NGAT) technologies for 6G and beyond, focusing on three key aspects: new-field NGAT, new-form NGAT, and new-metric-aware NGAT. The paper discusses the evolution of NGAT from three perspectives: new-field NGAT, which shifts from conventional far-field channel models to new near-field channel models; new-form NGAT, which includes reconfigurable intelligent surfaces (RISs), flexible antennas, and holographic MIMO systems; and new-metric-aware NGAT, which utilizes new metrics for advanced transceiver designs. The paper also discusses recent advances in semantic-aware NGAT technologies, which can utilize new metrics for advanced transceiver designs. The paper highlights the performance requirements of 6G, including peak data rate, spectral efficiency, latency, network reliability, energy efficiency, positioning accuracy, connection density, mobility support, and intelligence level. The paper also discusses the design challenges of near-field transceivers, including near-field beamforming, beam training, and channel estimation. The paper concludes with a discussion of other promising transceiver technologies for future research.This paper presents a comprehensive overview of next generation advanced transceiver (NGAT) technologies for 6G and beyond, focusing on three key aspects: new-field NGAT, new-form NGAT, and new-metric-aware NGAT. The paper discusses the evolution of NGAT from three perspectives: new-field NGAT, which shifts from conventional far-field channel models to new near-field channel models; new-form NGAT, which includes reconfigurable intelligent surfaces (RISs), flexible antennas, and holographic MIMO systems; and new-metric-aware NGAT, which utilizes new metrics for advanced transceiver designs. The paper also discusses recent advances in semantic-aware NGAT technologies, which can utilize new metrics for advanced transceiver designs. The paper highlights the performance requirements of 6G, including peak data rate, spectral efficiency, latency, network reliability, energy efficiency, positioning accuracy, connection density, mobility support, and intelligence level. The paper also discusses the design challenges of near-field transceivers, including near-field beamforming, beam training, and channel estimation. The paper concludes with a discussion of other promising transceiver technologies for future research.