bbPress.org

bbPress 1.2 (the plugin) should be stable enough to start testing as soon as September 15 (give or take a few days and/or missing features) with a full release due around the same time as BuddyPress 1.3.

ref: https://buddypress.org/2010/08/buddypress-and-bbpress-the-future/

that is why people are asking.