So I got the command update from the dealer last week, and from what I have noticed so far:

-audio fadeout for navigation istructions
-Your gear shifter actually has to be in "Park" in order for DVD's to appear on the screen. (before, you just had to be stopped, but could be in "D")

 

You sure about the second part, mine won't let you view DVD's when not in park. They "Forgot" to do the update when my car was in last time. I will request it again on it's next visit.

 

THAT WAS THE BEST FEATURE!!!!!
Ok, not the best, but a great one.
I liked being able to to watch movies in traffic!

*stops*
movie comes on
*rolls forward one meter*
movie stops and comes back on...

very easy like that. I don't want to put my car in park in a traffic jam...

 

Do you guys know if the update is done via a DVD (like the maps) or is it though the strat diagnosis computer.

 

Yes before it used to show the video when i am stopped with my foot on the brake, now the car has to be in Park.

 

We must have been at different release levels of Command to begin with. Have you checked out the Engineering menu, I read some new options are added in the latest release.