Facebook-owned WhatsApp seems set to update its app across Android, iOS, Windows Phone and Web platforms. The beta versions of the app have received new features which are likely to reach in the stable version of WhatsApp soon enough. The WhatsApp Web number 2.7315 now comes with two new features namely, Private Replies and Picture-in-Picture. On the other hand, app versions 2.17.424, 2.17.436 and 2.17.437 pack in new features such as Tap to unblock a user, New invite via a link and Shake to report. Here are some of the latest WhatsApp beta features: Private Replies in Group The Private Reply is a new feature that allows a user to reply privately to a group message. Basically, a person in a group gets an option called Reply Privately using which one can send a message to a particular member which the others cannot view. This feature was spotted in the WhatsApp Web version. Picture in Picture One of the hottest features, the picture-in-picture support for Whats...