We don't utilize the Notes button regularly. It would be great if there IS information present in the Notes area, if the button would be highlighted to draw our attention to it.
Thanks for the idea to highlight Notes button when there's information present. We are changing the status to "Open for voting".
Continue to vote and comment on enhancements by going to the Idea Exchange Home page and select "Status": Open for voting, "Sort by": Most Popular.>> ProConnect Idea Exchange
If you use Chrome, there is a Chrome extension that has a feature to highlight the Notes button in ProConnect when you have a note in it (and a bunch of other added ProConnect features). Search for "Refinement Tools for ProConnect" in the Chrome extensions store.
After installing it, turn on the option 'Highlight the "Notes" button when the tax return has notes.'