Microsoft appears to be testing the ability to integrate Steam games into its Microsoft Store. According to insider @eXtas1stv (via NotebookCheck), the company is conducting internal testing that could allow users to access their Steam library directly through the Microsoft Store.
However, it's important to note that this is likely not a full integration of the Steam client into the Xbox store, but rather a server-side tethering that will allow Steam games to be launched through the Microsoft Store. This could provide access to a more open ecosystem that would allow for library syncing, achievements, and possibly improved cross-platform multiplayer.
The news has sparked a debate on Reddit about the possibility of such a solution. Some users fear that such an integration could negatively impact the Xbox Store, alienating third-party developers, as happened when Sony forced NVIDIA to block GeForce Now support for PlayStation content. Others are leaning toward Microsoft's larger strategy of creating a universal gaming platform, especially amid rumors of a portable Xbox device in the works.
However, if the leak is confirmed, an official announcement from the companies may come soon and it is expected that the details of this integration will be revealed.