ed448 support in gpg?

[Jonathan Cross]

Hello,

I am looking into making a new key that is as "future-proof" as possible.
Offline master key that is ed448 would be ideal if possible with Curve25519 subkeys for daily use on a smartcard.

Is ed448 available / in development?
Or a similar 256bit "safe-curves" option?

Thank you,  Jonathan
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