While other messengers like Matrix/Element have only recently rolled out E2EE at all, Telegram continuing to pretend that encrypting only some comms, and those with proprietary algorithms is enough, and others like Mastodon just don't even try, Signal is now rolling out post-quantum cryptography with an upgrade to what they call PQXDH.
Now the rest of us would just have to trust that this time, NIST specs haven't been spiked with backdoors..
