Noun
old news (uncountable)
Synonym of yesterday's news
All new news is old news happening to new people. Malcolm Muggeridge
There's so much of a desire in the entertainment industry for newness, a desire to build somebody up and then treat them as old news within six months. I think you'd be naive if you didn't try to hold on to your own way of doing things. Felicity Jones
I'm very wary of doing political stuff for a lot of reasons. One of the big ones is that the shelf-life for them is not very long, and the joke becomes old news very quickly. Tim Heidecker