On its blog, BlackBerry indicates that it is offering this version of BBM in response to demand for it from those Android users sporting a Gingerbread powered handset. While the post didn't mention it, we assume that the BBM for Gingerbread users will also offer BBM Voice, BBM Channels and BBM Video. These will eventually be offered to the original BBM for Android and BBM for iOS apps.
BBM Voice allows users to make calls to other BBM members for free around the world. BBM Channels is a group of discussion and chat rooms, each covering a particular subject. BBM subscribers will be able to open their own rooms featuring their own topics, and corporations will also be sponsoring rooms of their own. BBM Video will allow subscribers to video chat with each other.
BlackBerry is planning on launching a version of BBM for Android users with Gingerbread
source: BlackBerry via AndroidCentral