Intel has referenced three unreleased Comet Lake-S processors in a support document. The processors include a Core i9-10900KS, which may be a special edition of the Core i9-10900K. The Core i9-10900KS would have ten cores, two more than the upcoming Core i9-11900K, Intel's flagship Rocket Lake-S processor.
https://www.notebookcheck.net/Intel-hints-at-Core-i9-10900KS-release-along-with-two-other-new-Comet-Lake-S-processors.520140.0.html