BlackBerry PlayBook upgrade delayed until 2012 with no BBM

The BlackBerry maker said Wednesday that it is delaying a much-needed update to the PlayBook tablet's operating system until February 2012. RIM'sPlayBook OS 2.0 software update for its BlackBerry tablet isn't coming out this year as originally planned, said David J. Smith, RIM's senior vice president in a statement. The PlayBook has sold sluggishly since its April debut . The tablet lacks built-in apps for key functions including e-mail, calendar, address book and BlackBerry Messenger access. Those updates are coming in PlayBook 2.0, said RIM co-CEO Michael Lazaridis. PlayBook OS 2.0 is expected to include a native email app and improved calendar and contact apps. And even with the delay, the OS 2.0 will still lack a key feature when it's finally released: the popular BlackBerry Messenger service, also known as BBM. The delay could further crimp the PlayBook's already disappointing sales.