Video calling is coming very soon to WhatsApp?
According to the source of the rumor, WhatsApp is also working on a way for group invites to be sent using NFC tags and QR codes. Another feature supposedly on the way to users includes the ability to send voicemail to a contact who doesn't answer a voice call (iOS only), and a call back button is said to be in the works right now. Also rumored to be coming to WhatsApp is zip file sharing support.
WhatsApp has been beaten to the video call punch by BBM. Just recently, BBM added video call support to the iOS and Android versions of the messaging app in the U.S. and Canada.
source: AndroidPolice via gadgets.ndtv