Hi frankiee,
Thanks for the feedback about the current behavior of widget libraries in Axure RP. The 9 beta currently has the same behavior as in Axure RP 8 where widgets in an existing file will not update automatically. The “Libraries auto-refresh” mention on our 9 beta page is referring to the automatic update of widget thumbnails in the Libraries pane (users will see that the option to “Refresh Library” is gone in the 9 beta because of this new feature). Since this wasn’t quite what you were looking for, I’ve passed along your feedback about the behavior of widget libraries to our product management team for further review.
And if you’re still interested in trialing the 9 beta after the above, please let us know. Ty!