While at BlackBerry World RIM showed off the awesome Pacemaker app for DJ’s. The app allows you to mix, sync, and scratch music on the PlayBook along with applying effects, loop, and much more. This is essentially a much improved version of the original Pacemaker hardware DJ tool. We had the chance to see a preview at BlackBerry World but check out the video below for a refresher. We will definitely let you know when Pacemaker hits App World on June 14th. BBin noticed that Pacemaker has confirmed their Summer release to be June 10th so save up your pennies!