WhatsApp is reportedly preparing a new feature that makes group admins 'more powerful'. Because this feature allows WhatsApp group admins to delete any message for everyone.
The existence of this new feature was discovered by WABetainfo. It is said that this feature will help admins better manage WhatsApp groups with the added ability to delete group messages for everyone.
This feature is only available to WhatsApp beta testers on Android version 2.22.17.12. To check if the new feature is available, if you are a group admin try deleting incoming messages. If you see the "delete for everyone" option, it means the feature is already available.
Your name will always appear in the chat bubble when you delete messages sent by members. The goal is to let everyone know that you did it.
There is no information yet when this feature which is still in testing will be released to all users. Hopefully in the next few weeks.
Previously, WhatsApp was known to be preparing an avatar feature, hiding online status and others.