With Bing Wallpaper, Microsoft’s team curates a new photograph to serve as your PC’s wallpaper. ... including whether the company is providing 4K wallpapers for high-resolution displays.

Thus, each wallpaper has a different size. There are several wallpaper sizes, 1920×1080 pixels: FHD, 2560×1440 pixels: QHD, 3840×2160 pixels: 4k. 1280×720 pixels: HD and 1600×900 pixels: Semi ...

Microsoft's recently announced mini PC for the Windows 365 service comes with two new versions of the stock Windows 11 wallpaper. Here they are in 4K.