It's New approach of Facebook to video calls, They added new quick video sharing option at the top right corner. Just Tap the video calling icon at the top corner in the active conversation.
Here is the Full Change-log of this update:
- Instant Video Feature
- App stability improvements
- Minor Visual Changes
Video will float on the top of your text conversation, So you can continue texting with a pop-up video view.
Check Out the Hands-on Video of this new Facebook messenger video feature:
In April 2015 Facebook has added video calling feature to its messenger app. After almost one and half year they added this new feature to their messenger app.
Else I also found minor visual changes in this update. They have changed the search box of the messenger app in this update. Install this update and you will see the new square and bigger size search box at the top of the app.
Click below to Download the Latest Version of FB Messenger
Facebook Messenger APk
Note: To Use this New Instant Video Feature, you and your contact both need to have the latest version of the app.