Version 0.5 of PCIe 6.0 is now available to members. They hope to release the final version next year.
PCIe 6.0 Specification Features Overview
- Data rate of 64 GT/s speeds, doubling the 32GT/s data rate of the PCIe 5.0 specification
- PAM-4 (Pulse Amplitude Modulation with 4 levels) encoding
- Low-latency Forward Error Correction (FEC) with additional mechanisms to improve bandwidth efficiency
- Backwards compatibility with all previous specification generations
For more, check out this blog post.