Major new feature rolling out 'in the coming days.'

A few weeks after WhatsApp added video calling to its beta channel, the Facebook-owned chat platform has announced that it's ready for stable roll-out. The new version will reach WhatsApp users on Android, iOS and Windows "in the coming days."

As we covered when the feature was in beta, video calls in WhatsApp require both users be on the latest version of the app, with the interface being similar to what many of us are used to in WhatsApp voice calls.

Whatsapp video calls

Implementing reliable video calling is tricky at the best of times. And for WhatsApp, there's the additional challenge of maintaining its well-earned reputation of working well even on a patchy connection. However WhatsApp founder Jan Koum told Reuters that Facebook is pitching in:

Koum said Facebook has allowed WhatsApp to use its servers and bandwidth around the world for voice and now video. That support will help spread the souped-up WhatsApp much farther and faster, he said.

With features like two-factor authentication and end-to-end encryption is considered a secure way to communicate. And so Facebook's involvement with the day-to-day operation of WhatsApp is a prickly issue — particularly as it relates to the sharing of data between the two.

Nevertheless, the new video calling feature is another much-needed arrow in WhatsApp's quiver as it takes on the likes of Apple and Google.

More: Everything you need to know about WhatsApp