I can confirm that full screen to the secondary monitor works again for me on a dual monitor set up. Yeah!!!!! However, Coherence still does not work. When I go into Coherence mode Parallels just disappears from my screens. I can see the Windows Apps in the dock but when I click on them, nothing happens. I tried: I unplugged my second monitor, switched into Coherence mode and it works. I can see my app (Firefox). I plug in my second monitor and it disappears. I tried: I have my two monitors connected. Start Parallels on primary monitor, click Coherence and it disappears. Unplug one, and its there So methinks Coherence is not working on dual screen. I am using a MacBook if that helps. Might be the graphics card.