WhatsApp is a Social Messaging Service where you can send messages, Audio & Video Calls. They Launch many other features since 2 Months ago. Like Swipe to reply, PIP Mode, WhatsApp Stickers and now they go to launch another one.
Reports say that WhatsApp is working on their feature like Video Preview in Notification Panel. iOS users get it and Soon it will come for Android Users. Due to this feature, If someone sends you a photo or Video, You don’t need to open WhatsApp, just check notification and see the preview that what they send you.