RIM today released an important BlackBerry Tablet OS update for its PlayBook to version 1.07.3312. The free update brings the latest version of the Adobe Flash Player to address some potential security issues. There have been no known reports of PlayBooks being affected by the Adobe Flash issue, but it's recommended to upgrade to be safe.
If you currently own a BlackBerry PlayBook tablet, you should automatically get a notification for the software update. You can also check for it under the Software Update section in the settings menu. PlayBook tablets purchased after October 6 will have the update installed automatically during the setup process.
Unfortunately, this isn't the major BlackBerry Tablet OS 2.0 update that's been rumored. The update is expected to add native email, contacts, and calendar functionality as well as the Android app player. However, it's believed that RIM will release the update later this month during the BlackBerry DevCon event.