Change record status: 
Project: 
Introduced in branch: 
9.2.x
Introduced in version: 
Description: 

Usages of \Drupal\system\Form\ModulesListExperimentalConfirmForm, \Drupal\system\Form\ThemeExperimentalConfirmForm and \Drupal\system\Form\ModulesListConfirmForm deprecated in favour of \Drupal\system\Form\ExtensionConfirmForm.

As internal API, ModulesListConfirmForm may also be removed in a minor release.

Impacts: 
Module developers