WordPress 5.6 May Break Sites on 8 December 2020
https://www.searchenginejournal.comOne of the WordPress developers behind the jQuery Migrate Plugin said in a support thread that the plugin would become “useless” once 5.6 rolls out. Anyone still depending on it in December will experience the rubber bands snapping off their sites all over again.
WordPress is on a planned three phase modernization of the use of jQuery. WordPress 5.5 was the first step toward modernizing WordPress by forcing the entire WordPress ecosystem to update their code and get on board with the latest and safest version of jQuery. WordPress announced these steps months ahead of time. Plugin and theme developers had ample warning that jQuery would be removed, giving them plenty of time to update their software.
There are many themes and plugins that are no longer being maintained and there may be others who have not yet updated their code. Users of those products will likely see their sites running into some issues when v5.6 drops. Check out the post for more info.