Public Beta testing
If you do have a one-time purchase license and would like to play with/test the features, you can install the beta. You will just need to sign out of your account in the beta and run it as a demo to see the new features.
I am no longer able to present powerpoint slides with 188.8.131.52 beta. This works fine in 7.2. All that shows is a black screen on the Live View. I see the thumbnails and can advance back/forth between them but the live review remains blank until I move to another set, such as an image or video.