Adds content introduced in 1.21.7. If you haven't read the official Minecraft article made by Mojang, the contents are really simple - a new painting and a music disc. No bugfixes from the official version included though :c
You can do whatever you want with that stuff. You can finally enjoy these cool things in an earlier modded version. This mod doesn't change much, but that doesn't mean it's not interesting (it's a backport after all)
