Reconfigurable Intelligent Surfaces (RIS) have been subject to intensive research under the growing conviction they are critical for sustaining promised performance and capacity improvements at higher radio frequencies. Significant commercial deployments are still around five years away, which is why RIS is sometimes conflated with 6G, just as the MIMO and beamforming were associated with 5G even though they were introduced earlier in the LTE era. Yet, RIS is bigger than any ‘G’ and represents the final frontier in taming the RF environment, for more efficient utilization of the potential data carrying capacity available, especially at higher frequencies. Now, operators are being urged to take notice and start preparing for incorporation of RIS into future mobile deployments, whatever number is…