It turns out that the rumors are indeed true: Facebook is bringing autoplaying ad units to News Feeds on mobile and desktop. According to the social network, previous trials have indicated that there’s great advertising value in autoplaying ad units, and that they generate an increase in viewer engagement of 10% over traditional, non-autoplaying video ads that debuted in September. In the face of news earlier this year from Ad Age that organic reach was on the downslide, Facebook is doing everything within its power to compete with Twitter and Pinterest, who continue to expand their advertising reach.