BlackBerry's effort to extend its messaging service beyond its own failed hardware has finally come to fruition. After some awkward false starts, plus a detailed leak, BlackBerry Messenger apps for iOS and Android will soon be available for download at the respective app stores, allowing members of those more popular ecosystems to do... well, chat-related things that they could largely do already, except now through BlackBerry's BBM servers. The company has confirmed that the Android BBM app will launch at 7AM ET on Saturday, while its iOS equivalent will be available beginning at 12:01AM local time (in each market) on Sunday. More details : http://bit.ly/15Eo3II