Not sure if this was posted yet, but the live stream starts in 5 hours. Also not sure if you can embed twitch here so I'll just leave the link.
Nvidia is set to announce their real-time ray tracing capable RTX 20 series cards. Apparently, they will also show some games capable of using said feature.
The GTX 10 series cards released over 2 years ago, so I am quite excited to see what they announce.