With all the talk of Mobilegeddon and the doorway page update, not a lot of people have their ear to wall of the social media office. There is actually a lot happening.
Facebook messenger is now going to be treated as a separate platform for ecommerce purposes: http://www.clickz.com/clickz/news/2401507/facebook-messenger-adds-e-commerce-capabilities. Other apps will soon be able to integrate into the messenger platform and the users can interact with merchants directly, perhaps even to negotiate price.
Twitter and Foursquare are partnering up to better integrate locations into Tweets: http://www.clickz.com/clickz/news/2401053/twitter-foursquare-partnership-will-allow-for-better-location-targeting. This gives brands more of a reason to make sure their Foursquare listings are accurate. It also means that Twitter can help brands connect with the most relevant audience possible.
Also, Facebook just acquired its own search engine, TheFind: http://marketingland.com/facebook-acquires-shopping-search-engine-thefind-121467. The acquisition is said to be used to make Facebook ads more relevant, but there is a conspiracy theorist in a lot of us that says this is just the first step toward Facebook inevitably making a challenge at Google.