Facebook already told us all that it'd be announcing something new and Android-related at an event on April 4th. Android Police has just given us a new heaping helping of evidence, via an APK teardown, that the social network will, at long last, announce an oft-rumored, never revealed Facebook phone and a FB-themed version of Google's mobile OS. The ROM reveals that it's built for an AT&T-compatible HTC Myst handset with a 4.3 inch display, 1GB of RAM and a dual-core MS
