You can download the update directly on your Android device through the Google Play Store. You can also download the update and find out what's new after the break.
Facebook Messenger for Android version 4.0 has the following new features and improvements:
- Groups: Now you can create groups for the people you message most. Name them, set group photos and keep them all in one place
- Forwarding: Want to send a message or photo to someone who isn't in the conversation? Just tap to forward it on
- Conversation Shortcuts: Create a shortcut so that you can get to any conversation right from your home screen
- Free Calls: Talk as long as you want and stay in touch wherever you are. (Calls are free over Wi-Fi. Otherwise, standard data charges apply).