Facebook F8 developer conference Live: Zuckerberg gets ready to unveil chatbots, live video and more

Facebook's F8 developer conference has kicked off, and the world of tech is waiting eagerly for some big announcements. There's been a steady stream of rumours about what Facebook co-founder and chief executive Mark Zuckerberg is going to unveil at the opening of the conference. Chatbots are believed to be one of the major new products, smart conversational programs built in to Facebook Messenger that can order pizzas, book taxis and reserve tickets. We're also expecting more details on its live video streaming tool, and possibly new plans for virtual reality (VR). Follow our liveblog below to keep up-to-date with all the latest news from the conference.