Starting on Monday, Facebook Home is allowing non-Facebook content to appear on the apps lock screen; however, the only ones that will be able to do this by going to Facebook for Android Beta testers and follow some easy as pie steps. From the Facebook Home settings menu, you can select which apps you want to sync with. Choices include Instagram, Flickr, and Pinterest...
Source: http://www.phonearena.com/news/Facebook-Home-now-offers-Instagram-Flickr-Pinterest-and-Tumblr-right-on-the-lock-screen_id48066
Source: http://www.phonearena.com/news/Facebook-Home-now-offers-Instagram-Flickr-Pinterest-and-Tumblr-right-on-the-lock-screen_id48066