Facebook debuted its new Facebook Home interface for the Android operating system in California Thursday, calling it a \"deeper\" experience than an ordinary app. Consisting of a set of the social network\'s apps that become the home screen of your Android phone, Home transforms it into \"Cover Feed,\" a visually rich and swipe-able version of News Feed for a user\'s phone. It also includes a updated version of messaging, complete with a feature Facebook has dubbed \"Chat Heads,\" with colorful notifications that include a user\'s Facebook friends\' pictures, CNET reported. Facebook unveiled the software, which will be available for download to a limited number of Android phones starting April 12, at its Menlo Park headquarters. \"We\'re not building a phone and we\'re not building an operating system,\" Facebook head Mark Zuckerberg said. \"We\'re building something a whole lot deeper than an ordinary app.\" At the unveiling, Taiwanese phone maker HTC also announced plans for a model they\'ve dubbed the HTC First, which will be the first smartphone to come with Facebook Home pre-installed. It will represent a \"great opportunity to bring mobile and social together,\" HTC chief Peter Chou said.