Cross country has moved into a new direction: manmade obstacles on the courses bring new requirements to the rims. When cornering trough manmade berms you need a wide rim, to get a better tire support, resulting in higher cornering speed. At the same time the rim has to be really lightweight for good acceleration. Therefor the X 432 was developed.

https://www.dtswiss.com/en/products/rims/mtb/cross-country/x-432/