Sony has announced that support for the Facebook app on Playstation 3 and PS Vita will be shutting down later this month. The official shut down date will be January 20.
The Facebook app was removed from the Playstation Store last September. The app will not work when software version 4.78 on Playstation 3 is released. This also goes for software version 3.57 on PS Vita and Playstation TV.