diogopedreira
commented
3 years ago I guess they made it official in their 6.5.7 release notes - https://experienceleague.adobe.com/docs/experience-manager-65/release-notes/service-pack/sp-release-notes.html?lang=en#uber-jar
Here is a sample of the issue: https://github.com/adobe/aem-project-archetype/blob/98f3b4efa9834437881b31a336459abe6a89ad00/src/main/archetype/ui.content/pom.xml#L105
The change in classifiers is documented here: https://github.com/AdobeDocs/experience-manager-65.en/blob/cb531bfc009fc766bab20d28cf332856b1e95c7b/help/sites-developing/ht-projects-maven.md#which-uberjar-to-use-which-uberjar-to-use
I did not find documentation from Adobe to confirm.