One of the things I noticed after updating my PlayBook today was that I was notified of some available updates for apps I had purchased. Previously on the PlayBook you had to open up BlackBerry App World and navigate to My World to view any available updates. Now it seems the updates are popping up without ever entering App World which is very cool indeed. Tap on the notification icon from the home screen, then the listed update, and App World takes you right to the app page so you can update. Hopefully this will give way to other apps having notifications when not open as well, but only time will tell.