Silicon Motion should have them in 2024

While most companies still haven't shifted to PCI Express 4.0, PCIe 5.0 SSDs for PCs are nearly with us.

32GT/s transfer rates

PCI-SIG  has released the new PCI Express  (PCIe ) 5.0 specification, which should allow reaching 32GT/s transfer rates, while maintaining low power and backwards compatibility with previous technology generations.