According to a blog post, WebRTC enables web apps to support video calls, voice calls and file sharing without any additional software or third-party plugins. “Rich activities” like these, Mozilla says, were some of the last remaining challenges that would prove that the Web can be a powerful platform for complex tasks. And it’s these challenges that are conquered in this update, according to Mozilla.
You can go get the update here here, and also try out a demo, called BanaBread made specifically to show off the update. Although keep in mind that you will still need a good internet connection and a newer machine, otherwise the application might become laggy.
Source: Mozilla Blog