Back in May, Facebook announced that it was going to simplify the interface on its Messenger app to fewer tabs so you can simply stay connected. This redesign included a new streamlined interface, a proper dark mode, and remove some of the shortcuts and features that people don't use. Earlier today, Android Police reported of a reader who sent in screenshots of the update installed on their mobile. According to this reader, the update came as a server-side change since their Messenger app had not been updated via the Play Store prior to noticing the change. Source:...
Source: https://www.gsmarena.com/facebook_messengers_new_ui_has_started_rolling_out_to_a_few_users-news-33495.php