WhatsApp video-calling appear to be coming soon
Newest build of WhatsApp with (v18.104.22.168) is expected to see the ability to send or receive video calls
WhatsApp video calling appears in leaked images
According to a recent post on Macerkopf.de, the newest build of WhatsApp with (v22.214.171.124) is expected to see the ability to send or receive video calls directly via WiFi or cellular services.feature is likely to hit the App Store with the app's next update
The audio calling (VoIP) feature of WhatsApp has been available since April 2015.
According to a report from Germany, the latest private beta versions of WhatsApp for iOS have video calling support built-in. You can see a couple of screenshots of the new functionality below.