Software Update in Mountain Lion Can anyone who has upgraded to Mountain Lion confirm that software updating is now done through the App Store and no longer through the Software Update utility?

If this is the case, does this mean different family members must sign in to the same account or use the same account just to update the OS? In my case,  purchased OS X Lion with my Apple ID, one of my family signed to my account once in order to download Lion, but they can update their system using the the classic Software Update utility afterwards. Now it seems they'll need to sign into my account every time for any update, or we'll have to create a new Apple ID just for this purpose.
The term Software Update does appear in the  menu, but clicking it opens the Updates tab in the App Store app.