Microsoft mistakenly published an internal design document for the upcoming Windows 10x operating system, so that the document provides some details about Microsoft’s plans regarding Windows 10x.

The software giant revealed Windows 10x as the operating system that runs the new Surface Neo, but it will also work on similar dual-screen devices.

Microsoft has confirmed – so far – officially that Windows 10x will be available on folding devices and dual-screen devices, with adjustments to both the Start menu and the taskbar.

But it is clear that the company now has ambitions to bring these changes to the traditional clamshell laptops. The document says: For clamshell and folding devices, the taskbar will be the same for the basic model but with a series of levers that can be pulled to create some alternatives in the model.

The document adds “Search integrates seamlessly with web results, available apps, and specific files on your device, and the recommended content is dynamically updated based on the most frequently used apps, files, and websites you’ve used recently.”

Windows 10x should improve the Windows Hello face recognition authentication experience.

The Windows 10x document says: The user is instantly moved to the authentication state when the screen is turned on, unlike Windows 10, where the user first needs to remove the lock screen before authentication.

The document explains that Windows Hello instantly recognizes the user when the device wakes up and the user immediately goes to their desktop.

Elsewhere in the document, Microsoft recalls Modern File Explorer, and the company has long been working on the latest UWP version of the traditional File Explorer application.

It seems that this newer version will debut with Windows 10x, so it’s probably easy to use and simplified for accessing documents stored in Office 365, OneDrive and other cloud services.

The company also simplifies the Quick Alert and Settings Center in Windows 10x, increasing access to important device settings, and prioritizing important settings such as battery life.

Microsoft obviously prioritizes the traditional Win32 versions of Office and the Web PWA versions of Office.com for Windows 10x instead of UWP.

The company has UWP versions of its Office mobile applications, but last year temporarily halted development of those applications.