A Huge Flaw was discovered recently on Whatsapp by Some of the security researchers where although a person is not a member of a private group, he/she can have access to the group using some hacking techniques and can read all the messages in the group. This is a serious security breach as Whatsapp has been saying since many days that the chats of users are end to end encrypted.
Now, Whatsapp has been testing a feature in its beta version where an admin can demote other admin of the group without removing them. Till Now, If one admin had to demote another admins, the other person should be removed first and then had to be added as a member of the group. But, Now after this new feature comes available, an admin can demote other admin of the group without demoting them.
This Feature is still in Testing stage and Whatsapp is testing this feature for both Android and IOS. We can expect this feature to be rolled out to users very soon.