Android users whove enjoyed their first taste of BBM will want to visit the BlackBerry Beta Zone today. BlackBerry has just released a private beta of the messaging client that introduces promised Channels and Voice support, giving Android users the same social feeds and free WiFi calling as their BB10 bretheren. Theres no mention of when the feature will reach either the public BBM build or its iOS equivalent, but its clear that wider availability is close at hand.