LLVM 20 will be released some time in March it seems - How To Release LLVM To The Public — LLVM 20.0.0git documentation, so this is the deadline for the article.
I told some of you over email that it was 3 weeks from now, that was the branching date not the 1.0 date, sorry for that!
I would like to get the article stable before the release date, so now is the time to review if you intend to, and think about whether you/your employer/your community would like to contribute a quote to the article. I will be adding quotes in the coming days, so you will have some examples for inspiration 
Thanks to everyone who has contributed so far!