The top of the home screen now features tabs for message threads, contacts that are currently active and groups, while the redesigned bottom bar provides access to the home screen, voice and video calling, the Camera button, people and games.
More details on the design tweaks were provided in a post by the Messenger page:
Your new home screen is organized around making Messenger your central hub for connecting with the people and businesses you want to in whatever way you prefer. All of your beloved features are still there, but they are organized a little differently to make it faster for you to find what you want. We’ve been testing this for a little while in countries all over the world and today we are making it available to everyone.
Now at the top of your Messenger home screen, you’ll find: new tabs for your Messages, who is active now (tap the Active tab and check out the green dot showing who’s currently messaging) and all your favorite groups highlighted.
By tapping or swiping to these tabs, you can quickly navigate to where you need to go and get messaging faster.
A new bottom bar also has tabs for home, calls, the Camera button, people and games. When you have new activity in one of the sections or the tabs, you’ll see a red dot letting you know to tap on the section or tab to check out the latest. For example, if you have a new, unseen message, you’ll see a red dot next to home along the bottom. Or if you have a missed call, you’ll see a red dot at the top next to calls.
These small changes are designed to make Messenger simpler for you—to help you get to your contacts quickly, jump into your conversations where you left off, start new chats and stay up to date. This will be rolling out worldwide on iOS and Android this week. As always, we look forward to hearing your feedback.
Marcus added in a post of his own:
Last month we unveiled our redesigned one-line composer that streamlined access to our various capabilities inside of your conversations. Today, we take this one step further by rolling out a visual update that simplifies navigation across Messenger.