Yes, it is true. Soon you will be able to install the awesome KDE desktop in Windows 8, thanks to the KDE Windows Initiative. Builds and setup files for KDE 4.8 on Windows XP, Vista and 7 are already available, and developers are working day and night to port it on Windows 8. The below video shows the performance of KDE in Windows 8 desktop. True, its not as responsive as Linux, but it works.
You can download the installer to give it a try. Note: Currently this project is under heavy development and chances are, some apps will just not work.