Highlighting RIM's presence at CES 2012 is the official unveiling of PlayBook OS 2.0. On track for a February arrival, this release will deliver many features that productivity-minded users have pined for since the tablet's arrival. First and foremost, we were given a demo of the PlayBook's new email client and address book. The new software is functional and intuitive, which offers a unified inbox, application integration and ties to social networks such as Twitter and LinkedIn. Also quite nice, the calendar displays both day and agenda views, along with the individuals you'll meet during the day. We also saw a quick demo of the
