Anandtech published The Intel Comet Lake Core i9-10900K, i7-10700K, i5-10600K CPU Review: Skylake We Go Again A quote from the article:

The first thing that comes to mind with Intel’s newest line of 10th Generation desktop processors is one of ‘14nm Skylake, again?’. It is hard not to ignore the elephant in the room – these new processors are minor iterative updates on Intel’s 2015 processor line, moving up from four cores to ten cores and some extra frequency, some extra security measures, a modestly updated iGPU, but by and large it is still the same architecture. At a time when Intel has some strong competition, Comet Lake is the holding pattern until Intel can bring its newer architectures to the desktop market, but can it be competitive?

  The Intel Comet Lake Core i9-10900K, i7-10700K, i5-10600K CPU Review: Skylake We Go Again