It's worth noting that the Copyright Term Extension Act (aka the Sonny Bono Act aka The Mickey Mouse Protection Act)[0] passed a bit over 20 years ago (and the term was extended by 20 years), so I think a certain amount of vigilance is warranted this year for (stealthy) attempts to retroactively extend copyrights.

But if that doesn't happen, then next January will finally see works start entering the public domain again, starting with ones from 1923.[1]

[0] https://en.wikipedia.org/wiki/Copyright_Term_Extension_Act

[1] https://arstechnica.com/tech-policy/2018/01/hollywood-says-i...