The otherwise familiar system tray contains at least one icon for recently launched apps (similar to iPadOS), while the quick settings have two levels of detail (such as what you might get in the Android status bar). And when you wake up your computer, you go directly to authentication instead of a lock curtain.
The documents also point out that Windows 10X is not intended exclusively for tablet users. There are several “levers” that can provide a more traditional experience with a left-facing taskbar, more tray icons, and similar changes. This might be necessary if devices like the Surface Neo have a laptop-like mode, but it also suggests that Microsoft is open to a variety of form factors that could benefit from the benefits of 10X.