To offer a better user experience for Win 10 users, Microsoft has released a series of 4k themes for Windows 10. The official Windows 4K themes include different types like nature, landscapes, deliberated scenes, and arts & architecture. All these themes are full of 4k wallpapers and can be downloaded for free. Here are the official 4K themes for Windows 10 that Microsoft has released in January 2020. Download them for free to add more beauty to your Windows desktop. Please note that the pictures are just screenshots of those wallpapers, you can download the 4k wallpapers by clicking the Download button.