Facebook updates Android app with voice messages, not voice calling
Since the update is to the main Facebook app, the other updates don't apply to communication. With this update, it has been made faster to open and few photots, and even better, you can now reshare your friends' stories to timelines, pages, and groups. It's a bit surprising that last feature didn't exist until now. It has been possible to reshare stories to your own timeline, of course, but not to other people's timelines, pages, or groups.
If you want the update, it's available now for free in the Google Play Store.