Someone probably knows this in more detail, and I can easily get the magazine wrong. But I’ll share the anecdote, maybe it’ll ring someone else’s bell.

Back in the day, talking 40s to 50s, Analog published a letter to the editor that was “from the future”. Several years in the future. The writer was commenting on the stories, the topics, the writers, etc. in that issue.

Several years later (and I want to say it was, like, 9 years), Analog published that issue based on that letter. They contracted the authors and stories, the whole thing.