RIM is launching its new BlackBerry 10 handsets in January, but the company hasn’t forgotten its faithful customers that are using its older handsets. In recognition of their loyalty, RIM has updated its BlackBerry Facebook app.

Facebook for BlackBerry has been upgraded to version 3.3, and it comes with a number of new features like expanded BlackBerry Messenger integration and more social options. There’s even an update for photo sharing.

First up is an expansion on Facebook’s BlackBerry Messenger integration. Now users can find fellow BlackBerry users on Facebook and add them to their BBM contact list. From there, users can start up BBM chats with their friends instead of using Facebook Messenger.

To make finding BBM users on Facebook easier, RIM has also enabled an option to let users share their BlackBerry PIN on Facebook. This will make it easier for other BlackBerry users to find you on the social network and vice versa.

BBM integration is nice, but RIM has finally added the best feature of Facebook to its BlackBerry app – unfriending. Users can now unfriend people from the drop down menu that appears when you tap on a person’s profile.

Last but certainly not least, photo pages on the BlackBerry app have been redesigned to make it faster and easier. Upon updating, you’ll see that photos are now arranged in thumbnails for faster browsing. Upon going full screen, the photos will be displayed in a higher resolution. Particularly important photos can also be saved to a BlackBerry device from the Facebook app for safe keeping.

RIM says that the Facebook app should be available to download on BlackBerry World today. It could take up to 24 hours for the update to appear, however, so just be patient. It won’t be long until you can start unfriending people on the go.