An anonymous reader writes: Facebook has announced that it would roll out a new live video tool called Live, available immediately for US iPhone users, and expanding to the rest of the world and Android users over the next few weeks. It is also expanding the 'Like' button to a range of emojis called 'Reactions'. The 'Live' video service has had a limited testing group since December, according to Product Manager Vadim Lavrusik. Starting today, Facebook users can access the service through the existing Update Status tool, and can control the audience for the video before uploading. Facebook also announced that it will roll out an expansion of the 'Like' button to a range of emojis called 'Reactions'.The 'Like' function will now include emojis for Love, Sad, Angry, Happy and Wow. The emoji for 'Yay' was discarded after testing.