This isn't true - I received a notification about an update for an app (MacTracker) that I had downloaded through the Mac App Store. That was the only notification that I've received thus far, though; I haven't received notifications about other apps or system updates. I thought it was supposed to check daily. I figure that at the moment there aren't any updates available; whenever I do check manually and there are updates, I assume that I just got to them before the automatic checking did.System updates will appear in NC. Normal app updates will not.