PCIe 7.0 is on track for a 2025 release, which means SSDs with speeds of up to 60GB/s should be available in the coming years
PCI Express 7.0 is coming! But don't feel as though you need to start saving for a new motherboard anytime soon. The PCI-SIG has just released the 0.5 version, with the final version set for release in 2025. That means supporting devices are not likely to land until 2026, with 2027–28 likely to be the years we see a wider rollout.

PCIe 7.0 will initially be far more relevant to the enterprise market, where bandwidth-hungry applications like AI and networking will benefit. Anyway, it's not like the PC market is saturated with PCIe 5.0 devices, and PCIe 6.0 is yet to make its way into our gaming PCs.

PCI Express bandwidth doubles every generation, so PCIe 7.0 will deliver a maximum data rate up to 128 GT/s. That's a whopping 8x faster than PCIe 4.0 and 4x faster than PCIe 5.0. This means PCIe 7.0 is capable of delivering up to 512GB/s of bi-directional throughput via a x16 connection and 128GB/s for an x4 connection.
https://www.pcgamer.com/hardware/pcie-70-is-on-track-for-a-2025-release-which-means-ssds-with-speeds-of-up-to-60gbs-should-be-available-in-the-coming-years/

If this is just mining, then you are right, but now miners are assembling powerful computers with a RTX 4090 video card and a multi-core processor to rent out for tasks of artificial intelligence and similar computing. The characteristics of the PCIe Express motherboard are very important.

Miners understand that they can earn several times more from equipment rental services than from regular mining. See how the Clore service works. When there are no applications for rental, the equipment mines coins, and when there is an application for rental, the profit is much higher, but to increase the chances of rental, the equipment must have very high performance.