I've already dropped a line at the dewiki MediaWiki talk for Monobook.js, which is about all I could think of to inform scripters.
The script (which is used at frwiki, too) shouldn't make any problems. It searches for divs of the editsection class, if it can't find any, it just does nothing. As the new version uses span instead of div the script reacts as if there where no headings in the page.