The boost clocks reported by 3DMark for the 6-core / 12-thread Rocket Lake-S CPU suggest that this could be a replacement for the Comet Lake-S i5-10400 CPU. The disappointing part is that there are no performance gains as far as CPU cores go, as the Rocket Lake-S engineering sample proves to be slightly slower than the Comet Lake-S model. It does, however, deliver better graphics performance thanks to the new Xe iGPU.
https://www.notebookcheck.net/6-core-12-thread-Rocket-Lake-S-CPU-early-benchmarks-reveal-disappointing-performance-gains-over-Comet-Lake-S.466247.0.html