OPENSSH 10.1 WILL WARN THE USER WHEN A NON POST-QUANTUM KEY AGREEMENT SCHEME IS SELECTED

Summary from the TLDR InfoSec newsletter

OpenSSH 10.1 will warn users when connecting to servers that use non-post-quantum key agreement schemes, encouraging migration to quantum-resistant cryptography such as mlkem768x25519-sha256 and sntrup761x25519-sha512 to protect against future "store now, decrypt later" attacks.