BlackBerry Playbook OS 2 Finally Turns the Playbook Into a Real TabletCasey Chan1/10/12 10:56pm34EditPromoteGo to permalinkBlackBerry just announced Playbook OS 2 which finally makes the Playbook useful. As opposed to the silly joke it was! The new OS, which really should have launched with the Playbook, adds e-mail, calendar and contacts. Finally! From the company that brought e-mail to your pocket, there's e-mail on their tablet.