For anyone who follows John Mark Ockerbloom’s annual Public Domain Day countdown, this year he is doing it at https://everybodyslibraries.com/2023/11/01/starting-to-count-down-to-public-domain-day-2024/
A lot of organizations publish countdowns, often at the last moment, but this is always one of the more interesting.
He’s on Mastodon too, if you are on there. I suppose I should try to set something up there but I haven’t got a clue where to start. For now I will use the blog.
Try the tag https://everybodyslibraries.com/tag/publicdomaindaycountdown/
Another one entering the public domain is the song “I Wanna Be Loved by You”, popularized by Betty Boop. https://everybodyslibraries.com/2023/11/15/boop-boop-a-doop/