interesting, YouTube channel Veritasium just published a video on how Enigma was broken during WWII. at the very end they also give message that has yet to be decoded, although apparently they're different.
WRT the timing, Veritasium maybe looked at the last few weeks and decided there's a fast-closing window in which to report on any famous messages yet to be solved.
Maybe both watched Tom Scott a month ago about Bletchley Park?
I just finished watching that video, and thought to myself "I'm sure someone else with Chat GPT tokens to burn has already done that"
And then I come to hackernews and well, not quite, but I'm sure that one will be done shortly too.