Rocket Lake-S processors officially went on sale on March 30th. As it turned out, Intel for some reason did not release an official graphics driver for them, and it is not on the company’s website now.
Motherboard manufacturers also do not offer fresh iGPU drivers for new processors. If you look at the available reviews, this is just noticeable, since the integrated GPU in the Core i9-11900K is inferior to the iGPU in the Core i9-10900K, which should not be.
It is unclear for what reasons Intel has not yet released a graphics driver, but the owners of the new CPUs can only wait.