And how will they do this? If they are updating your firmware while you are playing without your consent, and you decide to turn off your PSP, you're going to completely screw it up. They HAVE to ask you, or else they'll have a lot of dead PSP's that are under warranty. Trust me, they won't auto-update, its too risky on Sony's part. However, forcing you to update is almost just as bad as autoupdating, if you actually want to play any of the commercial games. However, there will eventually be a work-around, as there always is.
-Matt