I finally got it this morning. When I got up, the update was ready to be installed (I had left the Prime with the message about not being able to download when I went to bed). I ran it and, voila, my Prime was running JB. Gotta say that I like the changes Google made in JB. Things are running smoother, apps appear to be opening quicker, and Google Now is great.
We are the Droids...resistance is futile. You will be assimilated.