There is clearly a delay as motherboard makers have told ComputerBase that their Z490 platform is ready. Numerous leaks have been popping up around the web in the past few weeks, which means that the development of CML-S is well underway.
It is said that 10-core CPUs, the flagship mainstream series for CML-S, are drawing too much power, reportedly up to 300W, which is not really that surprising. Even the Core i9-9900KS draws 250-275W, but there is still some room for improvement for the upcoming 10-core CML-S part.
ComputerBase:
Several motherboard manufacturers revealed that the 10-core breaks the 300-watt mark at maximum load. Not surprisingly, the 9900KS already exceeded the 250-watt mark in scenarios of this kind. This information has nothing in common with the TDP, which is rumored to be 125 watts. Up to 4.9 GHz Turbo clock for all 20 threads on the flagship makes this value increase significantly in everyday life depending on the load.