When the webcomponents are no longer in polymer

The webcomponents still use polymer.
Polymer is old and not supported anymore.
Is there a plan to not use polymer anymore?

If you look at the GitHub issues with the no-polymer tag: Issues · vaadin/web-components · GitHub , you’ll see that there’s a lot of work done, but some tricky issues still remain. So it’s in the works, but there is no certain target release yet.