JAR packaging in Vaadin 14.1.4

In the [Release notes for Vaadin 14.1.4]
(https://github.com/vaadin/platform/releases/tag/14.1.4) it says that a new feature of flow::2.1.3 is: Copy frontend files during prepare-frontend when the packaging is JAR

Does this mean that we can have the frontend folder in the module root now for jar projects just like for war projects, instead of keeping them in /src/main/resources/META-INF/resources/?

My understanding is that it does not refer to that. Instead it is about this issue https://github.com/vaadin/flow/issues/6994 I.e. the fat jar did not work in development mode, and you needed to use -Pproduction.