Facebook Wants to Kill Phone Numbers Forever.David Marcus, Facebook’s head of Messenger, believes Messenger is the way of the future.
Messenger was the fastest growing app in the US in 2015, reaching 800 million monthly active users. It’s the second most popular iOS app of all time right behind Facebook itself.
Facebook wants to change the app from just a chat app to a full blown platform, a strategy that is already in place with ordering Uber rides, or companies being allowed to chat with customers.
Two future endeavors are M, a virtual assistant that can complete tasks on your behalf and Marketplace.
Marketplace enables users to buy products immediately after clicking on an ad. In these tests, a Marketplace icon replaces the Messenger icon on the mobile app (the Messenger gets pushed to the top left), enabling users to quickly reach a shopping page based on the products sold by Pages you’ve liked. That feature is currently available to a small subset of users in the U.S.

Facebook is also testing interest based newsfeeds. While the traditional “News Feed” remains, it is supplemented with secondary feeds — like “Style,” “Travel,” and “Headlines” — that are just a swipe away.
Source- http://www.theverge.com/2015/12/29/10683722/facebook-news-feed-customize-interests-update-shopping