Direct quote from the page:
Please note that this site is only about US law; the copyright terms in other countries are different.[2]
On January 1, 2026, thousands of copyrighted works from 1930 enter the US public domain, along with sound recordings from 1925. They will be free for all to copy, share, and build upon
Software in general is actually very hard to copyright, as you cannot legally copyright code, the most you’re allowed to do is patent the process the code is doing.
More often the copyright applies to everything else, like the brand, and the UI