I saw digital a few times. Basically the more notable difference is that you can chose the camera.
One view is like we get most of the time and is edited by them, shifting from one car to another or to pits or whatever as they best see fit. This is where the action is and is just what we saw yesterday.
But there are more, one chasing the first, one who trails him, one is from Tcams all the time, one is pointed at pits (even when nothing happens) and, maybe, the more interisting one is the same monitor with laptimes and split the bosses have at pitwall. This is the coolest of the whole thing to me.
Last one is a sort of "replay" camera that is triggered each time something noteworthy happens. Otherwise this channel is blank.
Of course there is yet another channel who shows in smal windows what's going on each other channels.
But there is a drawback to all this good: shifting channels on digital tv is damn slow, it can take even 2 secs and with time it gets annoying since your first istinct once you got the new toy is to change camera quite often.
Easily you could actually miss something important.
After a few minutes you realize it's better to stay on the primary view.
In the end you use the regular view 90% of the time, shifting to the laptimes screen once in a while to check if that driver is catching up or not.
The real advantage of digital is that th event is edited much better than usual and that onscreen overlays are much more complete and informative.
Also I don't think that national broadcasters will have much to do in the future about we see on screen. They provide the cameras and facilities but editor and crew are from Bernie.