The good news is not for playing games, it is for gamedev where several people will be able to delay the purchase of a RTX card for much longer time and also decide for a better model for their use purposes. Until we can put our hands in the graphics driver from April there is no way to tell if this is not just a strategy from NVidia to convince people to purchase RTX because now you could see how it performs against pascal. Even for games, you would still be able to decide if you want just reflections, shadows or both, so the issue on performance would not be that great.
The key argument on NVidia’s keynote now is that RT cores just accelerate ray tracing and that it is possible to have it working on Pascal aswel. Previously they lead people to understand that without RT Cores ray tracing would not be possible. This point for what I was tired to say to everyone, that the only thing necessary was to have the features implemented at driver level and would work for any card. I thinks this move will make AMD do something about their own cards.