Changelog
Every time I update my file, I have to keep a separate document to record all the changes I made linking to the labels I placed in my XD document so that everyone in the team, especially the engineering team will know what's the difference between version 21 and version 50.
It would be great if Adobe XD can create a changelog automatically, and take screenshots of those changes.

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Juan D. Bolaños commented
Taking a page out of Version Control systems where each commit to a repo or branch is accompanied by a commit message. The same concept can be applied in regards to Libraries shared between team members and other UI designers who work within the Library and shared assets.
Allowing the owner to attach a commit message or changelog with there update provides a clear understanding to those individuals who are working with the shared assets, what has changed, what the intent is, while overall improving the management of the library by the maintainer.