Viral pneumonia (like what this coronavirus can cause) is a lot scarier then bacterial pneumonia. If you have a bad case of bacterial pneumonia they throw you on some antibiotics and you start feeling better very quickly. With viral pneumonia, the best they can do is to put you on breathing machines and hope your body can fight it off.
No doubt, there's a reason this is news worthy. Even healthy people likely have significant risk, I'm just guessing it will be more similar to the risk of our typical viral pneumonias than something much worse. And I'm just speculating, even the experts likely don't have enough info to make very good predictions right now.