Since Facebook launched last month, it's only officially been available for a small pool of phones. But no longer: it seems the HTC One and Galaxy S4 are now fully Facebooked, too.
Android Central reports that after an update to the official Facebook app both phones—along with the Sony Xperia ZL—are able to run Zuck's new launcher. Verge confirms that to be the case, too, and I can certainly confirm it's the case for the HTC One—though the app's Google Play listing makes no mention of the change.
It seems strange that Facebook decided to roll the feature out without any fanfare. But if you have one of the handsets why not go check it out? [Android Central]