@JohnAskew: Aren't most people that were "deceived" dead by now?
Yep. And people who are alive and smoking now (and in their right mind) aren't defending their smoking by saying "nobody has proved that it's harmful" or "but the health benefits of smoking are disputed!"
All in all a fairly bland ruling. People who want to smoke will continue to smoke, and those that don't will continue to not smoke. And 16-year olds deciding to take up smoking won't be put off by the fact that cigarette companies lied to their grandparents about how bad it was for them.