One of the problems with the ELPA package manager is that you never know what you’re getting when you upgrade. The package manager tells you what packages can be upgraded and you can choose to upgrade or not but you don’t know what’s changed.
Happily, a new feature has just been committed. Now you can examine a diff between the old and new versions to get an idea of what has changed. It’s not ideal if you can’t read Elisp but at least those who do read it can get an idea of how the new version differs from the previous.
It’s not a big thing, I suppose, but it does show how Emacs is continuing to improve and make its users’ lives better. This new capability probably won’t be available until the next release but it’s something to look forward to.