Facebook recently introduced Graph API V3.2, which includes updates to Instagram Graph API, Page Insights, Pages and Video Polls, and Marketing API. The company also announced updates to Facebook Login and the Messenger App.
With no prior warning, Twitter has changed how apps can access images sent through Twitter's Direct Message API. Twitter was unable to give prior notice for security purposes, but the changes are in effect. Twitter encourages developers who access images through the API to check their integration.