It was almost a year ago that Microsoft announced that all Xbox consoles from Xbox One to current Xbox Series S and X will gain a new User Interface and more in sync with Xbox as a platform and since, it was only for Xbox Insider users since May of this year.
While the Xbox One, Xbox One S and Xbox One X were physically done by 2020, Microsoft and Xbox Game Studios were stretching along with 3rd party gaming studios some more life with games until things normalized after the pandemic, but everything that has a beginning, has an end.