Released *ring* 0.17.9. X25519 is about 20% faster for GCC users (clang got it in 0.17.8). AES-GCM is slightly faster. Auditing the code for memory safety and panic-freeness should be easier now. Expect 100% compat with 0.17.8, but MSRV was raised from 1.61 to 1.63; still Debian-Stable-friendly.