Twitter Flock appears to be the final version of ‘Trusted Friends’ that was announced as a concept in July last year and is designed to let users limit the visibility of their tweets to select people. A teardown of a recent Twitter for Android beta version has suggested the new feature in development.
According to a new report, Twitter is testing Instagram Close Friends like capability called Flock. It'll allow you to make tweets visible to a small group of people rather than broadcasting them on social media.