WhatsApp has introduced 2 new features for beta version 2.18.194. The first feature is to control the visibility of media files. By making this feature available through WhatsApp Settings > Data and Storage usage subsection, you will be able to stop visibility of media files in galleries. You will only be able to see the shared media content in WhatsApp.
The other feature is a shortcut for adding new contacts in WhatsApp. The new feature will enable you to directly add any contact to WhatsApp rather than adding them through contact directory in your mobile. These 2 features has been added after the addition of “Dismiss as Admin” option. This option allows admins to demote other admin or stop them from being act as part of the administration of a WhatsApp group without deleting them.