Microsoft and Facebook have always been strange bedfellows, but Windows 10 will fully embrace the social app. Redmond's new SDK tool will help developers create universal apps with Facebook integration for Windows Phone 8.1, Windows 8.1 or Windows 10 -- including authorization, likes, dialogs, the Graph and other functionality. As a user, that means you're more likely to see Facebook features turn up in Windows 10 apps as soon as they're released, whether using a tablet, phone or PC.

http://www.engadget.com/2015/07/15/m...-facebook-sdk/