Facebook seems to be planning on bringing its marquee service and WhatsApp closer together. At the moment, it appears to be testing a new feature which allows users to quickly switch between Facebook and WhatsApp apps through a shortcut button.
Tapping on the WhatsApp shortcut button, which appears prominently in the menu area, opens the WhatsApp app.
At the moment it’s not clear what happens when a user who doesn’t have an account with WhatsApp taps on WhatsApp shortcut button.
Facebook may just be looking to further boost the user base of WhatsApp, which is still struggling to gain traction in the United States and other Western markets.