BBM Channels is a community on BBM where you can meet others who share your interests. There are plenty of topics available, so you're sure to find some group that you will want to join. Adding millions of iOS and Android users to the app will allow BlackBerry to monetize it and sell ads that can reach a high number of coveted consumers.
Also expected to eventually be available for iOS and Android users is BBM Video, which Bocking said was also coming soon, back in October. Both iOS and Android have their own video chat applications available, FaceTime and Skype respectively, but BBM Video comes with positive feedback from BlackBerry users so perhaps those sporting iOS and Android flavored devices will take advantage of it once it is available.
source: BlackBerry via TechRadar