Facebook instant articles are shared 30% more as compared to traditional web pages. As it loads 10x times faster, it also drives more clicks. Initially for a limited period, Facebook released this feature for few allowed publishers. Now from April 2016 it open to all publishers.
The new version of Facebook SDK v4 was announced last year on Facebook Developer Conference. This version includes a major changes to the Login flow, improved error handling and a massive improvement on reducing the overall size of application using Facebook SDK.