Thanks to his position as head of Microsoft's Xbox platform, Phil Spencer is probably the first person in the world to own a functional Xbox Scarlett.
This revelation was revealed in a tweet, likely designed to both tease fans and build hype for the next-gen console.
In this tweet, Phil Spencer says he plays his games, interacts with the community, etc. This likely means that the One and Scarlett servers will be shared and that the backward compatibility of the latter is already integrated into the hardware. The same is true for the Elite Series Controller 2 pad mentioned by @XboxP3. As promised, the Xbox 360 and Xbox One devices will also be recognized by Microsoft's next console.
Finally, nothing new in Phil Spencer's tweet, even if the promise of backward compatibility could still be one of the big arguments in the next generation, when Sony said a few weeks ago that it was still working on full backward compatibility of the PS5.
In any case, it's still a matter of months before all the grey areas surrounding the next generation are cleared up and while it is always reassuring to see that new generation projects are progressing well, we must not forget that we are talking about machines planned for the end of 2020: we have time to see the future.