If you consume content from an HDR-capable display, you probably know how important it is to carefully calibrate it in order to enjoy the highest visual fidelity. Although Xbox already offers an HDR Game Calibration app, Microsoft is bringing over the capability to Windows in the form of a Windows HDR Calibration app too.
Similar to the Xbox app, the upcoming Windows app will offer three test patterns. These include patterns to determine the darkest visible detail, the brightest visible detail, and your display's maximum brightness. These are based on the recommendations of the HDR Gaming Interest Group (HGIG).
Microsoft has noted that while certified HDR displays work fine on default settings out-of-the-box without needing any additional configuration, it still might be worth checking it with the Windows HDR Calibration app once it becomes available.
The capability can be found in the Settings app under System > Display > HDR in the Windows 11 Dev Channel build 22557 that just rolled out yesterday, but since it is not live yet, it will simply redirect to Microsoft's blog post here. Once the app becomes available, it will be possible to update it from the Microsoft Store as well. It's currently unclear when the app will hit general availability, but we'll let you know when that happens.