Just as massive MIMO helped balance coverage and capacity for mid-band (sub-7 GHz) 5G deployments, Giga-MIMO is on track to continue to support this evolution as upper mid-band spectrum (7-16 GHz) becomes available. Speaking during Mobile World Congress 2023, Qualcomm Incorporated Vice President of Spectrum Policy and Regulatory Counsel John Kuzin discusses the outlook for the upper mid-band, and highlights research on the sub-THz frequencies (100+ GHz) that 6G will use. Kuzin also updates on global traction for mmWave and looks at how spectrum sharing technologies could fit into the future of cellular communications.