Even though the Xbox One X can still be seen as a high-end, aspirational console, its replacement (or replacements) are in the works.

Project Scarlett, as the Xbox Two plans are allegedly known internally, is not likely to come this year. But, here is a stack of rumoured information about Microsoft’s prospective follow-up(s) to the Xbox One.
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https://www.pocket-lint.com/games/news/xbox/144368-xbox-one-2-xbox-two-specs-release-date-news