WhatsApp will be launching a Group Invitation feature in the near future, according to WABetaInfo.
This means that you may soon be able to have more control over your privacy settings regarding group invitations.
The feature will allow you to choose who, if anyone, can add you to their group chats.
If your privacy setting does not allow you to automatically be added, you will receive a request to join instead.
- WABetaInfo also reports that the feature will first appear in iOS Beta updates.