The Shanghai Mobile World Congress sees the SD Association announce SD Express-- "revolutionary" memory cards leveraging the PCIe 3.0 specification and NVMe v1.3 protocol to deliver the fastest speeds yet.
Part of the SD 7.0 specification, SD Express cards are capable of transfer speeds of up to 985MB/s, and reach capacities up to 128TB. The format should remain backwards-compatible, meaning any speed-rated card can be used with UHS-I, UHS-II, UHS-III and SD Express host devices. However the aforementioned speed advantages will only be attained when matched with an appropriate host device.