I think this firmware update entails a lost opportunity, plus a problem:
The lost opportunity is to let the user customize the movie button, rather than merely disable it. I for one would have found it very desirable to activate the focus assistance with it, because the latter's native button (lower right to the rear LCD) is not very ergonomic when you hold the camera to your eye.
The problem is with the bracketing. It was useless before, and is useless now, to me at least. This is because for sharp pictures with long exposure times, you want to use the self timer or a remote control, so as to avoid motion blur from pressing the shutter button.
But you must press the shutter button when bracketing. You cannot combine the NEX-7's bracketing with self timer or remote, because these are mutually exclusive options. So, for all practical purposes, you can't use bracketing with long exposure times.
I am sort of disappointed, or disheartened about this, because I doubt that the above points will ever be addressed, after Sony published "the" firmware update for the NEX-7.