This is not included with Windows 11, but is available from a variety of sources online, such as this 4K sample on Imgur. Right-click the image after you download it and then select Set as desktop ...

Finding the best 4K themes for Windows 11/10 devices is not a difficult affair if you know where to look. Luckily, you do not have to look far with for these options. If you want themes that ...

For these, we've included both the original pattern (so you can tile it yourself), as well as a 4K ... Windows 10's life, including one tailored for light mode, and one made for Windows 365 ...

The Windows 11 taskbar gets worse with every release, and the widget popups, copilot button, and expanded Search bar aren’t helping. Here’s an idea, What if you nuke the whole thing?