Intel and Samsung are both working on new PCIe 5.0 SSD hardware. The expected doubling of the bandwidth should perk up Windows boot times. Intel said that the new hardware will be available probably Q4 this year in time for the AMD launch of the AM5 systems.
Until the prices of DDR5 come down substantially there is no motivation to abandon the X570 quite so fast. 64GB of DDR5 cost more than 128GB of DDR4.
This reality is why Intel introduced Z690 with support for DDR4 or DDR5. Intel is aware of the cost so maintaining DDR4 meant a cost savings which is meaningful in the marketplace.
PCIe 5.0 SSD speeds are about 14GB/s which is able to load a game very quickly.