Questions about: notification-area

I've upgraded to 13. 10 and now I don't have the standard menu clock, which I need for work. I checked and 'indicator-datetime' is installed
So I’m messing around with Natty a little, and I noticed that all the apps that would normally use the system tray (or “notification area”?) aren’t displaying there. Is that a bug, or is that the way it’s going to be? I heard something about Ubuntu g