So far the "Watch list" has been reactive. There are a few areas that can indicate that an article needs attention because it may be out of date. Wikipedia articles have references, when a reference is a "scholarly article", it is normal when an article will be cited by future articles. These publication can strengthen or weaken the assertions made in a Wikipedia article.
In Wikidata there is a bot that continuously updates "scholarly articles" with its citations. When one of these articles is used as a reference in Wikipedia, it merits attention. This can be reflected both on a Watch list and on the article itself.
Having the latest literature available will help settling disputes among editors as well.