It's brief and a bit blurry, but in the midst of a 14-minute demonstration of the BlackBerry PlayBook the folks from Lotusphere Podcasts scored something of a first: a demo of the tablet finally using portrait mode. Unfortunately, we don't get a look at much more than the home screen and the keyboard, and it appears that the functionality might not be perfected just yet -- the PlayBook used for the first ten minutes of the video was the usual horizontal-only deal, and the portrait-enabled model was quickly put back on the table after the brief demo. Hit up the source link below for the complete video, and look for the portrait mode to make an app
