https://wccftech.com/xbox-edinburgh-count-codenames-xbox-os/

References to Xbox ‘Edinburgh’ and ‘Count’ have recently been discovered in the Xbox One OS, possibly referring to the codenames of upcoming Xbox consoles.

Over the past few months, we’ve written quite a bit about Microsoft’s rumored Xbox ‘Lockhart’ console that has yet to be confirmed. While Microsoft hasn’t officially mentioned the ‘budget’ version of its Xbox Series X console, references in the company’s latest Game Development Kit and Windows OS Libraries, highly suggest that Project Lockhart is the real thing.