Further down the blog post, it mentions that you have the capability to turn the Ray-tracing feature on and off. However, this will be a feature that the developers can opt-out if ever.
And in regards to the backward compatibility, we are assured that Xbox 360, original Xbox, and Xbox One games can be played on Xbox Series X. “They committed themselves to ensuring the thousands of games on Xbox One, including Xbox 360 and original Xbox games, will play even better on Xbox Series X.” said Will Tuttle, Xbox Wire Editor-in-Chief in the blog post.
It’s great news in this time of crisis due to the coronavirus — COVID19. We hope that the launch date of next-generation consoles will not be delayed.
Now, we have to wait for Sony to reveal something about PlayStation 5.